Zeiss antique camera 120 folding camera film back adapter

Description

Not sure which model this is.  Appears to be very soon after merger/takeover of former competitiors.  Has Derval shutter and  Periskop marked lens.  Both from before Zeiss days.  Camera comes with Zeiss marked roll film back for 120 film.  Untested mechanically, but will look good on your shelf of earlier Zeiss folders.