Discussion Forum: Thread 372324

 Author: Clmorning View Messages Posted By Clmorning
 Posted: Sep 5, 2025 08:32
 Subject: Question about a 2x14 plate
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 Topic: General
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Clmorning (451)

Location:  USA, North Carolina
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Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?
 Author: peregrinator View Messages Posted By peregrinator
 Posted: Sep 5, 2025 08:41
 Subject: Re: Question about a 2x14 plate
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peregrinator (1106)

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In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Sep 5, 2025 08:49
 Subject: Re: Question about a 2x14 plate
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SylvainLS (52)

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In General, peregrinator writes:
  In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray

Yes, 2x14 wasn’t used in sets before 2012.  That’s a bit long for a 2009 copyright
but that’s an eternity for a colour that was phased out in 2003.
 Author: Clmorning View Messages Posted By Clmorning
 Posted: Sep 5, 2025 09:25
 Subject: Re: Question about a 2x14 plate
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Clmorning (451)

Location:  USA, North Carolina
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In General, SylvainLS writes:
  In General, peregrinator writes:
  In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray

Yes, 2x14 wasn’t used in sets before 2012.  That’s a bit long for a 2009 copyright
but that’s an eternity for a colour that was phased out in 2003.

I was thinking the same thing about yellowing but both sides are the same color.
Very weird. You would think if it sat in the sun, only the one side would be
discolored but not both sides.
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Sep 5, 2025 09:31
 Subject: Re: Question about a 2x14 plate
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SylvainLS (52)

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In General, Clmorning writes:
  In General, SylvainLS writes:
  In General, peregrinator writes:
  In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray

Yes, 2x14 wasn’t used in sets before 2012.  That’s a bit long for a 2009 copyright
but that’s an eternity for a colour that was phased out in 2003.

I was thinking the same thing about yellowing but both sides are the same color.
Very weird. You would think if it sat in the sun, only the one side would be
discolored but not both sides.

Yellowing is helped by sun light (UV), it doesn’t need sun light.

The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.
 Author: Clmorning View Messages Posted By Clmorning
 Posted: Sep 5, 2025 09:49
 Subject: Re: Question about a 2x14 plate
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Clmorning (451)

Location:  USA, North Carolina
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In General, SylvainLS writes:
  In General, Clmorning writes:
  In General, SylvainLS writes:
  In General, peregrinator writes:
  In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray

Yes, 2x14 wasn’t used in sets before 2012.  That’s a bit long for a 2009 copyright
but that’s an eternity for a colour that was phased out in 2003.

I was thinking the same thing about yellowing but both sides are the same color.
Very weird. You would think if it sat in the sun, only the one side would be
discolored but not both sides.

Yellowing is helped by sun light (UV), it doesn’t need sun light.

The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

Thank you.
 Author: 1001bricks View Messages Posted By 1001bricks
 Posted: Sep 5, 2025 13:27
 Subject: Re: Question about a 2x14 plate
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1001bricks (55812)

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In General, SylvainLS writes:
  In General, Clmorning writes:
  In General, SylvainLS writes:
  In General, peregrinator writes:
  In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray

Yes, 2x14 wasn’t used in sets before 2012.  That’s a bit long for a 2009 copyright
but that’s an eternity for a colour that was phased out in 2003.

I was thinking the same thing about yellowing but both sides are the same color.
Very weird. You would think if it sat in the sun, only the one side would be
discolored but not both sides.

Yellowing is helped by sun light (UV), it doesn’t need sun light.

The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

I'm not concerned; I don't have time.
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Sep 5, 2025 13:34
 Subject: Re: Question about a 2x14 plate
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SylvainLS (52)

Location:  France, Nouvelle-Aquitaine
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In General, 1001bricks writes:
  […]
  The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

I'm not concerned; I don't have time.

Take a good breath and drink a glass of water.
 Author: 1001bricks View Messages Posted By 1001bricks
 Posted: Sep 5, 2025 13:49
 Subject: Re: Question about a 2x14 plate
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1001bricks (55812)

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In General, SylvainLS writes:
  In General, 1001bricks writes:
  […]
  The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

I'm not concerned; I don't have time.

Take a good breath and drink a glass of water.

Roman chamomile or nothing.
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Sep 5, 2025 13:55
 Subject: Re: Question about a 2x14 plate
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SylvainLS (52)

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In General, 1001bricks writes:
  In General, SylvainLS writes:
  In General, 1001bricks writes:
  […]
  The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

I'm not concerned; I don't have time.

Take a good breath and drink a glass of water.

Roman chamomile or nothing.

It’s still 99.9% water
 Author: TheBrickGuys View Messages Posted By TheBrickGuys
 Posted: Sep 6, 2025 10:19
 Subject: Re: Question about a 2x14 plate
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TheBrickGuys (15027)

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  The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

That is interesting. I know that sunlight is bad for Lego but I did not know
they degrade in a closed box. In what way do they degrade? Care to share some
details on this?

Thanks, Jim
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Sep 6, 2025 10:44
 Subject: Re: Question about a 2x14 plate
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SylvainLS (52)

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In General, TheBrickGuys writes:
  
  The plastic can degrade in a closed box.  All it needs is oxygen (air, humidity)
and time.

That is interesting. I know that sunlight is bad for Lego but I did not know
they degrade in a closed box.

Nothing is forever

There’s been several threads about this and several accounts of “surprises” when
opening (more or less old) boxes.


   In what way do they degrade? Care to share some details on this?

Technical: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4320144/

Simpler: https://medium.com/@pueojit/a-look-into-the-yellowing-and-deyellowing-of-abs-plastics-db14b646e0ad
 Author: rab1234 View Messages Posted By rab1234
 Posted: Sep 5, 2025 16:39
 Subject: Re: Question about a 2x14 plate
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rab1234 (2757)

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I've come across many LBG parts from architecture sets in particular where
maybe all the 1x3 plates are uniformly discolored and none of the other parts
are. My hunch is that different parts were made in different manufacturing facilities
with different quality control. I've heard that factories from China in
the ~2010 era may have been responsible for these different shades/discoloring
of LBG.

Either way, it's definitely not Light Gray.



In General, Clmorning writes:
  In General, SylvainLS writes:
  In General, peregrinator writes:
  In General, Clmorning writes:
  Hello all. I found a 2x14 plate, has lego printed on it. It has item number
91988 printed with a date of 2009. It is light gray when compared to dark gray,
light bluish gray and dark bluish gray. However, item number 91988 did not come
in light gray. Any thoughts on that and why the error in date?

It's almost definitely yellowed light bluish gray

Yes, 2x14 wasn’t used in sets before 2012.  That’s a bit long for a 2009 copyright
but that’s an eternity for a colour that was phased out in 2003.

I was thinking the same thing about yellowing but both sides are the same color.
Very weird. You would think if it sat in the sun, only the one side would be
discolored but not both sides.