Undetermined Type Items and Variants


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What is an undetermined type?
The words "Undetermined Type" in the title of a catalog entry indicate that items in inventories or for sale are not variant-specific.

What are variants?
Variants are differences in what is essentially the same item. For parts, these differences can be in the mold, the color, or the print. Part variants may be quite minor or involve serious functional differences. There are also variations in set contents, set packaging, and set instructions, as well as in books, catalogs, figures, and gear. In fact, anything in the BrickLink catalog may have variants.

How does BrickLink handle variants?
When a different version of an item in the catalog is discovered, then the existing catalog entry for that part is sometimes split into two or more entries. If there are any items for sale or items sold under the original catalog entry, then the original entry is not immediately removed from the catalog. Instead, the entry is marked for deletion after new catalog entries are created to account for the differences.

Are there lists of variants?
Yes. Some of them are below. The rest can be found by visiting the Item Relationships page and clicking the links.

Why doesn't BrickLink have catalog entries for all variants?
Splitting variants, especially part variants, involves significant work for sellers, buyers, administrators, and contributors. Therefore, variant splits may not happen frequently.

Why does BrickLink handle variants inconsistently?
BrickLink's handling of variants is the result of many years of differing viewpoints on how variants should be addressed. Much of this occurred without written guidelines on handling variants. Additionally, the site did not begin formally collecting data about all variants until late 2018, meaning that the true scope of variants was likely not fully understood prior to that time.

Are there variants not documented on this page?
Yes. Many variants haven't yet been discovered. And, in addition to the items on the lists below, there are other known issues on which no catalog-wide action has been taken:

  1. When alternate parts appear in a set and are intended to have stickers applied the stickered part entry is sometimes distinguished by variant and sometimes not. Technically there should be two entries for every stickered part that has a distinguished variant in a set inventory. The same applies for variants in assemblies.

  2. Similar or identical patterns that have both printed and molded versions are not currently distinguished by the catalog. Although not functionally different, these are technically different parts due to production differences and may have different Element IDs.

  3. Numerous parts have mold differences that involve the presence or absence of part numbers and the word "LEGO" being molded into the part, as well as some parts that have different versions of the LEGO logo on the studs. These differences are generally not distinguished or noted by the catalog.

  4. Mini doll heads have multiple undistinguished variations that would require significant changes throughout the category if addressed.

  5. Many Educational & Dacta sets varied in appearance and contents, sometimes significantly, during their years of production. A few of these sets have been split into multiple catalog entries, but most have not. Splitting all the sets that could be split would be a gargantuan task due to the relative rarity of sets and poor preservation, meaning a lack of sealed sets, for this line.

  6. A fair number of sets were packaged differently with the same contents or similar (but different) contents. BrickLink recognizes some of these differences with separate catalog entries and item relationships, but does not recognize many others. Additionally, hundreds or thousands of sets had differences in original boxes and set instructions that are either unrecognized or only recognized with additional notes.


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Part Variants Not Completely Split

This is a list of known variants still in the process of being split. This means that the undetermined part variant still exists in the inventories of some sets. This list demonstrates the scale of the difficulty of variant splits and the length of time a part variant split can take - some boat masts were split in 2004 and still are not completed.

  1. Bar 1 x 8 with Brick 1 x 2 Curved Top End (Undetermined Type)

  2. Boat Mast 2 x 2 x 20 with Holes (Undetermined Type)

  3. Boat Mast Section Middle 13 2/3 H (Undetermined Type)

  4. Boat Mast Section Top 16 H with 4 Stud Holes at Bottom (Undetermined Type)

  5. Brick 1 x 1 x 5 (Undetermined Stud Type)

  6. Brick 1 x 4 with Car Grille Black Pattern (Undetermined Type)

  7. Brick 1 x 4 with Car Grille Chrome Pattern (Undetermined Type)

  8. Brick, Modified 1 x 1 x 3 with 2 Clips Vertical (Undetermined Stud Type)

  9. Brick, Round 2 x 2 Dome Top (Undetermined Stud and Bottom Type)

  10. Clikits Icon, Flower 5 Petals 2 x 2 Small with Pin (Undetermined Type)

  11. Clikits Icon, Flower 10 Petals 2 x 2 Small with Hole (Undetermined Type)

  12. Clikits Icon, Heart 2 x 2 Small with Pin (Undetermined Type)

  13. Clikits Icon, Round 2 x 2 Small with Hole (Undetermined Type)

  14. Clikits Icon, Square 2 x 2 Small with Hole (Undetermined Type)

  15. Clikits Icon, Star 2 x 2 Small with Pin (Undetermined Type)

  16. Clikits Part Separator (Undetermined Handle Type)

  17. Cone 2 x 2 x 2 (Undetermined Stud Type)

  18. Dolphin with Normal Connection (Undetermined Type)

  19. Door 1 x 4 x 6 with 3 Panes - (Undetermined Glass Color Type)

  20. Duplo Rotor 3 Blade, 4 Diameter (Propeller) - (Undetermined Hole Size Type)

  21. Duplo Sheep First Version with Flat Ears (Undetermined Eyes Type)

  22. Electric, Sensor, Light with Non-Removable Lead (Undetermined Length Type)

  23. Electric, Sound Siren 9V 2 x 2 x 1 1/3 (Undetermined Noise Type)

  24. Electric, Wire with Brick 2 x 2 x 2/3 Pair (Undetermined Length Type)

  25. Hinge Plate 1 x 2 Locking with 1 Finger On End (Undetermined Type)

  26. Hinge Plate 1 x 2 Locking with 1 Finger on Side (Undetermined Type)

  27. Hinge Plate 1 x 2 Locking with 2 Fingers on End (Undetermined Type)

  28. Horse, Belville (Undetermined Pattern Type)

  29. Hose, Pneumatic 4mm D. (Undetermined Length Type)

  30. Hose, Ribbed 7mm D. (Undetermined Length Type)

  31. Hose, Rigid 3mm D. (Undetermined Length Type)

  32. Magnet Coupling, Train (Undetermined Cylinder Length Type)

  33. Magnet Holder Tile 2 x 2 (Undetermined Type)

  34. Minifigure, Headgear Helmet Space / Town with Thick Chin Strap (Undetermined Visor Dimple Presence Type)

  35. Minifigure, Headgear Helmet Space / Town with Thin Chin Strap (Undetermined Visor Dimple Presence Type)

  36. Minifigure, Utensil Magnifying Glass with Trans-Clear Lens (Undetermined Frame and Handle Type)

  37. Minifigure, Utensil Radio (Undetermined Handle Type)

  38. Minifigure, Weapon Pike / Spear (Undetermined End Type)

  39. Plant, Tree Palm Trunk (Undetermined Connector Type)

  40. Plate, Modified 1 x 1 with Clip Vertical (Undetermined Clip Type)

  41. Plate, Modified 1 x 2 with 1 Stud, Jumper (Undetermined Bottom Type)

  42. Plate, Modified 1 x 2 with Arm Up (Undetermined Arm Length Type)

  43. Plate, Modified 1 x 2 with Handles (Undetermined Ends and Attachment Type)

  44. Plate, Modified 1 x 4 with Towball Socket (Undetermined Socket Type)

  45. Road Sign Triangle with Worker and 2 Piles Pattern (Undetermined Men Type)

  46. Shield for Large Figures with Knights Kingdom Danju Wolf Pattern - (Undetermined Material Type Version)

  47. Shield for Large Figures with Knights Kingdom Jayko Hawk Pattern - (Undetermined Material Type Version)

  48. Shield for Large Figures with Knights Kingdom King Mathias Lion Head and Crown Pattern - (Undetermined Material Type Version)

  49. Shield for Large Figures with Knights Kingdom Rascus Monkey Pattern - (Undetermined Material Type Version)

  50. Shield for Large Figures with Knights Kingdom Santis Bear Pattern - (Undetermined Material Type Version)

  51. Shield for Large Figures with Knights Kingdom Vladek Scorpion Pattern - (Undetermined Material Type Version)

  52. Slope 45 2 x 1 Double (Undetermined Underside Type)

  53. Slope 45 2 x 1 Double / Inverted (Undetermined Underside Type)

  54. Slope 75 2 x 1 x 3 (Undetermined Stud Type)

  55. Slope 75 2 x 2 x 3 (Undetermined Stud Type)

  56. String, Cord (Undetermined Type)

  57. String, Cord Medium Thickness (Undetermined Length Type)

  58. String, Cord Thick (Undetermined Length Type)

  59. String, Cord Thin (Undetermined Length Type)

  60. Support 2 x 2 x 2 Stand - (Undetermined Hole Type)

  61. Tap 1 x 1 (Undetermined Nozzle End Type)

  62. Technic, Axle Connector 2L (Ridged Undetermined Type)

  63. Technic, Brick Modified 2 x 2 with Ball Receptacle and Axle Hole (Undetermined Type)

  64. Technic, Gear 24 Tooth Crown (Undetermined Type)

  65. Technic, Link 1 x 6 (Undetermined Inner Ring Ends Type)

  66. Technic, Shock Absorber 10L Damped (Undetermined Spring Type)

  67. Technic, Shock Absorber 10L Damped, Spring (Undetermined Type)

  68. Technic, Shock Absorber 6.5L (Undetermined Spring Type)

  69. Technic, Shock Absorber 6.5L, Piston Rod with Spring (Undetermined Spring Type)

  70. Technic, Shock Absorber 9.5L (Undetermined Spring Type)

  71. Tile 1 x 1 with Groove with Letter Capital Q Pattern (Undetermined Font Size and Line Type)

  72. Tile, Modified 1 x 2 Grille (Undetermined Type)

  73. Tile, Modified 2 x 3 with 2 Clips - (Undetermined Clip Type)

  74. Tire 17.5mm D. x 6mm with Shallow Staggered Treads - (Undetermined Tread Type)

  75. Wheel 11mm D. x 12mm (Undetermined Hole Type)

  76. Windscreen 2 x 4 x 3 Frame - (Undetermined Stud Type)


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Known Part Variant Catalog Entries Needing Action

This is a list of known catalog entries that require updates. Two or more variants of each part exist and each catalog entry on this list needs to be renumbered to show that multiple variants exist, be retitled, or be marked for deletion after a specific catalog entry is created to replace it. There is no specific time set for any parts on this list.

  1. Antenna 1 x 4 - This entry will be replaced by an entry for the rounded top version. A catalog entry already exists for the flat top version.

  2. Arm Mechanical, Exo-Force / Bionicle - This entry may need to be retitled to indicate the version.

  3. Arm Piece with Pin, 2 Fingers - This entry has "B" and "C" versions without an "A" version.

  4. Bar 1L with Clip Mechanical Claw - This entry was improperly split - it should be marked for deletion and a new entry created for the part without a hole.

  5. Bracket 1 x 2 - 1 x 4 - This entry will be replaced by an entry for the squared corners version. A catalog entry already exists for the rounded corners version.

  6. Brick, Modified 1 x 1 with Clip Vertical - This entry will be replaced by an entry for the solid stud version. A catalog entry already exists for the hollow stud version.

  7. Brick, Modified 1 x 2 with Cable Holding Cutout - This entry will be replaced by an entry for square cutout version. Entry already exists for oval cutout version.

  8. Brick, Modified 1 x 2 with Vertical Clip - This entry will be replaced by an entry for the square clip version. Entry already exists for the open O clip version.

  9. Brick, Modified 2 x 4 with Coupling, Male - This entry will be replaced by an entry for the low pin version. A catalog entry already exists for the high pin version.

  10. Brick, Round Corner 2 x 2 Macaroni with Stud Notch - This entry may simply need to be renumbered.

  11. Cloth Sail Rectangle with One Extended Corner - This entry was incorrectly combined. Two sails exist with two different PCCs.

  12. Cone 1 x 1 without Top Groove - This entry may simply need to be renumbered.

  13. Container, Box 2 x 2 x 2 - This entry will be replaced by an entry for the hollow stud version. A catalog entry already exists for the solid stud version.

  14. Container, Cupboard 2 x 3 x 2 - This entry will be replaced by an entry for the hollow stud version. A catalog entry already exists for the solid stud version.

  15. Container, Treasure Chest Bottom - Slots in Back - This entry is undetermined - three known variants are grouped within. Also, B-variant should be A-variant.

  16. Door 1 x 3 x 2 Left - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  17. Door 1 x 3 x 2 Right - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  18. Door 1 x 3 x 3 Left - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  19. Door 1 x 3 x 3 Right - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  20. Door 1 x 3 x 4 Left - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  21. Door 1 x 3 x 4 Right - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  22. Door 1 x 5 x 4 Left - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  23. Door 1 x 5 x 4 Right - This entry will be replaced by an entry which describes the handle version. Entry already exists for the thin handle version.

  24. Hinge Cylinder 1 x 3 Locking with 1 Finger and 2 Fingers on Ends, without Hole - This entry may simply need to be renumbered.

  25. Minifigure, Utensil Camera Handheld Style with Compact Handle - This entry may simply need the item number changed.

  26. Minifigure, Utensil Seat (Chair) 2 x 2 - This entry will be replaced with a version sans sprue mark. A catalog entry already exists for the sprue mark version.

  27. Panel 1 x 2 x 1 - This entry will be replaced by an entry for the squared corners version. A catalog entry already exists for the rounded corners version.

  28. Plate, Modified 1 x 2 with Clips Horizontal (thick open U clips) - This entry may simply need to be renumbered.

  29. Plate, Modified 1 x 2 with Steam Engine Cylinder, Round Surfaces - This entry may simply need to be renumbered.

  30. Plate, Modified 8 x 8 with Grille - This entry will be replaced by an entry without a center hole. Entry already exists for the center hole version.

  31. Plate, Round 2 x 2 with Axle Hole - This entry will be replaced by an entry for the standard hole version. A catalog entry already exists for the X-hole version.

  32. Propeller 3 Blade 5.5 Diameter - This entry will be replaced by an entry for the large hole version. A catalog entry already exists for the small hole version.

  33. Slope 45 2 x 1 - This entry will be replaced by an entry for the bottom tube version. A catalog entry already exists for the version sans bottom tube.

  34. Technic, Axle and Pin Connector Toggle Joint Toothed - This entry will be replaced by an entry without slots. Two other catalog entries already exist.

  35. Technic, Brick 1 x 2 with Axle Hole - This entry will be replaced by an entry describing the currently undefined version. Two other catalog entries already exist.

  36. Technic, Brick Modified 2 x 2 with Ball and Axle Hole - This entry will be replaced by an entry sans ball holes. Entry exists for version with holes in ball.

  37. Technic, Gear 16 Tooth with Clutch - This entry has a "B" version without an "A" version.

  38. Tire 17 x 43 - This entry has a "B" version without an "A" version.

  39. Tire 23mm D. x 7mm Offset Tread - Band Around Center of Tread - This entry has a "B" version without an "A" version.

  40. Tread Small - Old (30 tread 'links') - This entry has an "A" version without a "B" version.

  41. Tile 2 x 2 with Black Train Track Switch Point Left and Number 2 Pattern - This entry needs to be split.

  42. Tile 2 x 2 with Black Train Track Switch Point Right and Number 1 Pattern - This entry needs to be split.

  43. Tire Smooth Old Style - Small - This entry and its variants may need to be renumbered.

  44. Train, Track 4.5V Crossing - This entry may simply need to be renumbered.

  45. Train, Track 12V Conducting Rail Straight - This entry has a "C" version, but no "A" or "B" versions.

  46. Train, Track 12V Conducting Rail Curved - This entry may simply need to be renumbered.

  47. Train, Track Rail Curved Inside - This entry may simply need to be marked for deletion.

  48. Train, Track Rail Curved Outside - This entry may simply need to be marked for deletion.

  49. Vehicle, Racer Launcher - This entry needs to be split.

  50. Wedge, Plate 8 x 4 Wing Left - This entry has an "A" version without a "B" version.

  51. Wedge, Plate 8 x 4 Wing Right - This entry has an "A" version without a "B" version.

  52. Wheel 43.2 x 28 Balloon Small - This entry has an "A" version without a "B" version.

  53. Wheel Old with 4 Studs - This entry has "B," "C," and "D" versions without an "A" version.

  54. Window 1 x 4 x 5 - This entry will be replaced by an entry for the hollow studs version. A catalog entry already exists for the solid studs version.



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Known Color Variations in Parts

This is a list of known parts for which colors vary noticeably. This list does not categorically include colors that are known to vary due to quality control, such as dark red. The list also does not include variations in marbling because parts with color marbling generally vary, sometimes quite significantly. These color variations are not likely to be distinguished in the future and this list is provided merely for informational purposes.

  1. Bar 12L with Open Stud, Tow Ball, and Slit (Boat Mast) - This part color varies in red.

  2. Bionicle Zamor Sphere (Ball) - This part color varies in all colors.

  3. Door for Slotted Bricks - This part color varies in all colors.

  4. Hinge Coupling Nylon - Two Connected 2 x 2 Plates - This part color varies, whether intentionally or unintentionally.

  5. Human Tool, Rip Cord Flexible with Handle Thin for Chima Speedorz - This part color varies in yellow.

  6. Rock Infinity Stone - This part color varies in trans-yellow.

  7. Technic, Engine Crankshaft - This part color varies in red and yellow.

  8. Technic, Engine Piston Round - This part color varies in red and yellow.

  9. Window 4 Pane for Slotted Bricks - This part color varies in all colors.

  10. Window 6 Pane for Slotted Bricks - This part color varies in all colors.

  11. Window 8 Pane for Slotted Bricks - This part color varies in all colors.

  12. Windup Motor 1980s Key - This part color varies in red.




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Known Set Variants Not Distinguished

This is a list of known set variants not currently distinguished (meaning split into separate catalog entries), set entries still being split, and other oddities in the BrickLink catalog. These set entries may or may not be changed in the future.

  1. Beauty Studio - This set is known to have come in a limited release to the press with special outer packaging.

  2. Dacta Pneumatic Set (Late Version) - This set is an unfinished variant split.

  3. Little Creations - This set is known to have come in a limited release to the press with special outer packaging.

  4. Nonmotorized Simple Machines Set (2002 Version) - This set is an unfinished variant split.

  5. Serious Play Connections Kit 2010 - This set is an unfinished variant split.

  6. Serious Play Identity and Landscape Kit 2010 - This set is an unfinished variant split.



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Known Catalog Variants Not Distinguished

This is a list of known variants from the Catalogs item type not currently distinguished (meaning split into separate catalog entries) and other oddities from the Catalogs item type. These entries may or may not be changed in the future.

  1. 2001 Mini Bionicle (4160419) - This catalog has four known variants.

  2. 2001 Mini Bionicle - Gali (4130829) - This catalog has four known variants.

  3. 2001 Mini Bionicle - Kopaka (4130832) - This catalog has four known variants.

  4. 2001 Mini Bionicle - Lewa (4130831) - This catalog has four known variants.

  5. 2001 Mini Bionicle - Onua (4130828) - This catalog has four known variants.

  6. 2001 Mini Bionicle - Pohatu (4130827) - This catalog has four known variants.

  7. 2001 Mini Bionicle - Tahu (4130830) - This catalog has four known variants.



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Known Figure Variants Not Distinguished and Other Oddities

This is a list of known figure variants not currently distinguished (meaning split into separate catalog entries) and other oddities in the BrickLink catalog. This list does not precisely match the purpose of other lists on this page, but is included for the sake of keeping a record. These figure entries may or may not be changed in the future.

  1. Battle Droid Pilot with Blue Torso with Tan Insignia and One Straight Arm - This figure is undetermined because there are two different arm attachments.

  2. Battle Droid Security with Straight Arm and Dark Red Torso - This figure is undetermined because there are two different arm attachments.

  3. Battle Droid with One Straight Arm - This figure is undetermined because there are two different arm attachments.

  4. Bill - This figure can be made with stickers from LEGOLAND Idea Book 6000, but otherwise does not qualify for a catalog entry.

  5. Classic - Yellow Castle Knight Red - with Vest Stickers - This figure is undetermined because there are two different sticker color possibilities.

  6. Classic - Yellow Castle Knight Red Cavalry - with Vest Stickers - This figure is undetermined because there are two different sticker color possibilities.

  7. Han Solo in Carbonite (Brick 1 x 2 x 5) - This figure has print variations.

  8. Mary - This figure can be made with stickers from LEGOLAND Idea Book 6000, but otherwise does not qualify for a catalog entry.



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