This Dr. W. Gérard B3x sniper scope has an uncommon transitional straight lined mount. These mounts didn’t allow to aim with the rifle regular sighting organs. That’s why they were replaced by deported mounts on most of sniper scopes pretty early in the war.
Skoparette 4x scope, made by Voigtländer in Braunschweig, was one of the main models used by Bavarian snipers during WW1. The rear mount bears the logo of the Gebruder Merkel manufacturer in Suhl, Germany.
The “G” 4x scope, made by Dr.W.Gerard in Charlottenburg, used by Bavarian snipers during WWI, was slightly modified from a civilian hunting scope. Only two modifications were made: the rifle number was engraved on the scope and the 2-4-6 meter dial was added.