I'm looking for information regarding how to identify Bayer and BASF (and other ??) Test Bricks from regular Lego Bricks. Some Test Bricks are easy to identify, like fx Bayer bricks marked with letters on the studs (or a mix of letters, Lego logo, letters+numbers etc), but how about bricks with Lego on the studs + single numbers ''inside'' each tube and no ''pat. pend.'' text ?? are they also Test Bricks ?? and if they are, is it then Bayer or BASF Test Bricks ?? and how about the two bricks on the pictures ?? they also have no ''pat. pend.'' text, they are numbered at top with 3001 and with 1-177 at buttom. I have seen these been sold as ''complete (Bayer or BASF ??) Test Sets, containg bricks numbered 3001 + 1 to 4-###, but I have the same bricks numbered 3001 + 1 to 8-177 ?!? Well, for me it's a huge mystery, with 100's if not 1000's of bricks I can't determine are or are not Test Bricks - I hope I can find help here to get closer to solve my ''Regular Bricks vs Test Bricks''-mystery....
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So many directions to go into, unfortunately. :-(
I am also pursuing the different LEGO boxes throughout the years (Europe/USA/Canada/Australia/Asia)... as well as the local language LEGO box variations, to include in my update to the guide (free to current owners).
@paul_merton Test bricks were used by chemical companies (Bayer and BASF in Germany, Borg-Warner in Britain, and Samsonite in USA) to test the mixed plastic pellet color batches via a genuine LEGO mold. In the 1962-64 era these bricks were produced to test the exact mix of the new ABS plastic that was replacing Cellulose Acetate... so bricks from the 1960 are the most plentiful.
The only bricks I know for sure about (released to the public) were the Bayer bricks and Borg-Warner bricks. The Bayer bricks were given to Bayer employees in bulk at Christmas 1965 in Leverkusen Germany (HQ of Bayer). The Borg-Warner bricks made their way out of the Grangemouth Scotland testing facility via 2 employees of Borg-Warner who used real LEGO molds to test bricks with.... and made marbled bricks with them in 1978... until a TLG representative found out about it, and the mold was taken back by TLG, and the license for Borg-Warner to test them revoked. These Borg-Warner bricks were released to people in the Grangemouth Scotland area.
So many of the test bricks in common colors are virtually indistinguishable from regular bricks. But Bayer and BASF created colors that were never seen before....
Bayer Test Bricks (from Maxx)...
BASF test bricks (from Maxx)...
So awhile back, I was looking for a Grangemouth test brick, but there were none for sale anywhere. Somehow, I was lucky enough to find a gentleman by the name of Olaf Blankenfeldt. (I'm pretty sure @Istokg knows him, as he has mentioned Olaf before).
Anyways, he has all kinds of reasonably priced stuff for sale, Test bricks, Marbled bricks, 1:87 Vehicles, I think he has some wooden stuff too. I guess he doesn't sell on bricklink or ebay but sells through his e-mail, which is '[email protected]'.
So there it is!
One of his images is at the end of my non-LEGO System collectors guide... the 1952-57 1:43 Chevrolet Trucks/Wagons Guide. This shows a heartbreaking group of old worn and corroded trucks... that saw heavy playwear...
These trucks are all made out of plastic and wood (tanker trucks only), with a easily corroded zinc front grill. This group of trucks in poor condition would be worth many thousands, had the trucks been in good shape.
Also remember between test brick's, there are also the marbled bricks from changing color's in the mold's.
And think sometimes they get mixed up with test bricks.
Also did the Architecture set's 850,851 and 852 contain , modulex bricks with letter's on stud, so they also proberly get mixed up with test bricks.
@brickgitt if I should guess on Your bricks, at top picture, with mold pip stud, guessing newer brick, properly in between working process from going without part/element number (3001) to present bricks.
Like I have stack of pat. pend. erased with mold pip. stud, instead of mold pip side, also in between brick, like.
Have some marbled but only a few with font and not (bslot) 3001 but 3002's:
Ups yes sorry, 750, 751, 752,
Well I did have the 750 and it did contain bricks with M on stud, unfurtunally I sold it, and my Pictures aren't high res, so can't remeber which color's and if other letter's.
And as far as I could shiff up that would have been from Modulex.......... ?
Also the small modulex came in 2 different, so did guess the big one's also did.
Tried to look really hard, and it seems like it was the gray ones.
Thanks for the compliment brickgitt, and to answer your question, yes, Gary knows me. Usually I have a lot of questions, sometimes I find part of an answer.
Do you still have any extras? I haven't been able to find any teardrop C bricks yet...
I have 7xC/8xC/8xF 1xA/1xB/1xC/1xD 2xA/2xB/2xC/2xD 7xG & Old Logo Bayer Bricks, plus a few BASF bricks (these are the one's I don't fully understand as they look like normal Lego bricks)
I also have a few Grangemouth Bricks thanks to Olaf