Biogon? West german?
Wasn't Biogon a Carl Zeiss design to begin with? In other words it had to be copied in west germany after the war?
The camera design elite in germany resided in Dresden, unfortunately for the entire german photo industry big power politics interferred witrh the post WW2 history and rebuilding - locking out the *best part* from the world market.
I have an early SLR found in USA, ebay - they had to remove the Contax D lettering with a dremel, in order to sell it in the US, and hence it sold for peanuts.
I still remember the back-pages small ads in Modern Photography, advertizing German top quality SLR, that sold for 1/4 of the price of anything coming from (west) Germany and half of anything from Japan.
Even if all the west german designs was inferior, the east germans probably lost money on their export....-