Danish 8xc Without Mold Number
German 8xc bricks without mold number have been known for years. Recently we found out that there was a similar …
2×4 Bricks
The best of them all, the iconic 2×4 LEGO® brick! Also the oldest (together with the 2×2 brick.)
LEGO Test Brick – “I” Above and Inside Tubes – Modulex Colors
These bricks could originate in two different molds, but because they are found together in Modulex colors it looks like …
LEGO 7xlogo + 1xFGHJKLMN
These bricks are probably Minitalia test bricks made by LEGO in Denmark. These bricks have the Minitalia version of the …
3001 With Cross-Support and Pip on the Short Side – Nr 3/09 to 3/16
This is the only brick with cross-supports and thick walls. The brick might have been intended to make transparent bricks. …
3001old in Odd Colors – Work in Progress
This is still a work in progress, but I said I would try to post today. Current time is 23:47, …
System Plast, Kolding, Denmark – Test bricks
Thanks to Fantastic Brick and FraSprea for exploring the history of System Plast at Kolding. The following information was available on the history page on …
Suspected and Known Origins of Test Bricks
We currently know (or strongly suspect) that test bricks were made and used at the following locations. Links to albums …
Quick Reference Guide – Is This a Test Brick?
“Is the brick I found special?” Part numbers: 3001old, 3001 and 3001special as used on BrickLink (but excluding the 3001oldf1 …
Test Molds in the Production Process
While we do not know how LEGO works exactly, we can make a reasonable guess about how the material flow …
3001 Old – 343 to 350 Inside Tubes
Unusual colors – found in Germany by Thomas Modern logo Inner ribs: Visible as a frosted line on both the …