3001old Without Cross Support – PIP Stud – Number Above and Below Tubes
3001old without cross support, with the mold pip on the stud, and the mold number above and/or below the tubes. …
Overviews
3001 Without Cross Support – Number Inside Tubes
Most of the 3001old bricks with the mold number inside the tubes were made in white, red, blue, yellow, black …
3001old with Split Tubes – Inner Wall Variations on Mold Numbers 77 to 96
The molds for the bricks with split tubes and mold numbers 77 to 97 were revised a few times. I …
3001old with Split Tubes
In 1973 LEGO introduced a new version of the brick. (Drawing date according to LEGO vs Tyco, introduction into sets …
3001old with Mold Pip on the Stud
Here is an overview of the mold versions I found for the bricks with tubes, without cross-support and with the …
Minitalia 2×4 Molds
I think the most recent information about the history of Minitalia is in the comments here and here, so I am using those …
Early Bricks with Tubes – Mold Identification with Letter + Number
The earliest bricks with tubes used only a number on the short side. There are several very similar molds like …
Hollow Brick Identification Chart
Here is the chart use to separate my hollow bricks by mold version. More molds might exist, and I will …
Moving Molds
Looking at the slotted bricks we found in Denmark, Sweden and Norway, I think the molds probably moved like this. …
Main Timeline of 2×4 Mold Versions (No Complete Overview)
This is a quick image I created to answer a few questions. It gives an overview of the main mold …