Grangemouth Test Bricks
An overview of the different Borg-Warner Grangemouth test bricks that we know. The dates shown are my estimation.
Test
Test bricks were (and are) made internally by TLG or externally by chemical companies to test some properties of the brick.
Bayer Old Logo: Hole in a Stud
A hole in one stud of all no 19. [Original post and comments on Flickr.]
Missing Tube in Bayer Old Logo
Missing tube of all no 5. Surprisingly no no1 was found in 6kg old logos… [Original post and comments on …
BASF Overview
Here is an overview of all BASF brick versions I know. Top row BASF C1-C4 Pat. Pend. Scratched C and …
BASF Test Brick – Number Only (1)
These bricks have been found together with BASF V-bricks with closed studs. Looking at the mold markings, this mold must …
BASF Test Brick – Old Logo, Mold Pip Stud, With Roman Numerals
This mold was possibly first used in regular production, but I have not found any corresponding bricks yet. The uncommon …
BASF Test Brick – Old Logo, Mold Pip Stud, With Roman Numerals (VII)
Many of the bricks from this mold show black marks like those shown in this photo. Wikipedia Moulding defects: Burn …
The Golden Glow
This is an old test brick (BASF old logo, mold pip stud, Roman numerals inside). The chemical companies that made …
BASF Test Brick – V – Phase 3 With Closed Studs
This mold was made by a revision of the older V mold. The stud holes have been closed. The mold …
BASF Test Brick – V Light Grey Glitter
The two bricks in this photo have the same color, but the reflected color changes strongly depending on the orientation …