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I just randomly checked the imprinted information inside some of the bricks in my Lego sets and found that it varied.

I found several different types of information:

  • Most pieces have Lego copyright notice ie. (c) LEGO, but many others don't have
  • Most pieces have two numbers are thin and italic, but some others are in bigger font.
  • In some pieces, there is a third number instead of LEGO copyright notice.

How does this information vary by year/set/produced country?

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1 Answer 1

up vote 10 down vote accepted

Most elements will have their official "Design ID" imprinted on them - this is typically the longer number, and can usually be used on the Pick a Brick site or sites such as BrickLink and Peeron to track down additional bricks. Note that this is different to the "Element ID" that is printed in the instruction part inventories which has the colour encoded with it.

I've got the following three elements in front of me at the moment:

Various Elements

The 6x2 plate [part:3795:6] has the following:

  • © LEGO (highlighted in red)
  • 03795 - This is the padded Design ID (highlighted in blue)
  • 10 049 (highlighted in yellow)

The 4x1 tile [part:2431:6] has the following:

  • © LEGO (red)
  • 2431 - This is the Design ID (blue)
  • 15-10 (yellow) - 3 others in the same set had different numbers

The Plant Leaves 4x3 [part:2423:2] has the following:

  • © LEGO Group (red)
  • 2423 - This is the Design ID (blue)
  • 6•02 (yellow) - another one of these in the same set had the same number.

I believe the numbers highlighted in yellow are mould numbers - so the factories can track down imperfections with old moulds or similar.

Looking at an element that I have in rather large quantities now, the Tile 4 x 3 with 4 Studs in Centre [part:88646:0] taking four at random they all have:

  • © 2009 The LEGO Group
  • 88646

But then each one has a different mould ID: 01-B04, 04-B04, 10-B02, 08-B08

With regards to the copyright statement - as you can see across from these examples, they use different versions depending on the space available. I guess they feel that having the part and mould ids are slightly more important than their copyright statement for tracking purposes.

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Thanks, have you got any brick that doesn't have copyright statement? –  Tien Do Jun 12 '12 at 9:22
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@Tiendq - The leg elements from Chinese made minifigures don't have the © LEGO statement on the bottom of the toe that normal legs have on the right leg. And I can't seem to find one on the heads with the hole in the stud. –  Zhaph - Ben Duguid Jun 24 '12 at 20:24
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