Berlin foundry est. in 1872 by Otto Tech. Took over Julius Opitz’s foundry. Acquired Francke in 1912. Acquired by Berthold and Gursch in 1917. [Bauer/Reichardt]
Contributed by MacNeill Chapman
Contributed by Florian Hardwig
Contributed by Sean O'Connor
Contributed by Stephen Coles
Contributed by Matthijs Sluiter
Contributed by Dafi Kühne
Contributed by Roger Black