OK people, I've done the searches and have come up with little to no information about view cameras (field camera design) in the size 12X15", which is roughly 30X40cm.

I just bought one on the German Ebay, together with a brass barrel 480 "Voss/Goerz" lens.
The camera has a glass plate holder and film in that size is available from Webphota in Berlin (among others I'm sure).

Question: Does anyone have any information or links that might be helpful in researching this camera a bit more?