I have this camera I got as an extra when buying another camera. It came with 6 film holders that will fit a sheet that is 2.5" x 3.5". I was wondering if I use the 2.25" x 3.25" sheet film or if this camera used a film size that no longer exists? The camera itself had no markings I could find. The shutter is a Compur and the lens is a jos. Schneider & Co. Kreuznach Xenar F3.5 105cm. I think this might be an ICA before they merged with Zeiss but I'm not finding much. The film holders are rather funky but kind of cool. I would love to have this as a "user" but I will accept a fate of "shelf sitter".