USSRPhoto
Vladislav Kern
I definately will post them to the catalog entry. Maybe sometime in october. 
Vlad.
Vlad.
outfitter
Well-known
The back is the Rolex back made in Germany before the war. There was a better American copy made after the war called the Suydam back. There are masks for 6x6, 6x7 and 6x9. The backs were sold in different versions for common cameras such as 9x12 and 6x9 "hand and stand" folding plate film cameras , graflex 4x5 etc.
Michael
Michael
USSRPhoto
Vladislav Kern
Michael, you are absolutely right! It is a Rolex rollfilm adapter. It had also been identified as such by Luiz Paracampo (rangefinder forum user name marianobre) who just sent me corrections for that entry. Thanks for the tip!
Vlad
Vlad