* Change 2 Part Black {44301 Hinge Plate 1 x 2 Locking with 1 Finger On End (Undetermined Type) to 44301a Hinge Plate 1 x 2 Locking with 1 Finger On End with Bottom Groove}
* Change 2 Part Black {44302 Hinge Plate 1 x 2 Locking with 2 Fingers on End (Undetermined Type) to 44302a Hinge Plate 1 x 2 Locking with 2 Fingers on End and 9 Teeth with Bottom Groove}
* Change 3 Part Light Bluish Gray {4460 Slope 75 2 x 1 x 3 (Undetermined Stud Type) to 4460a Slope 75 2 x 1 x 3 - Open Stud}
Comments from Submitter:
Source: Set from my personal collection that was bought new and not mixed with other parts.
For future reference: My set with code 4215 has the following variants: