Help identifying a Cambo camera

[hidaniel]

I would be quite thankful if someone here could ID what model Cambo I have. For some reason I thought Cambo and Calumet focus screens were interchangeable but unfortunately the replacement screen I picked up, which originally belonged to a Calumet, is about 2 millimetres too long on the long axis. I’ve included a picture of the back as I’m not sure if there are different versions with different ground glass sizing.

212353

212354

[Dan Fromm]

It looks like an SC-2 but I have no idea what that inverted rail rider serving as a tripod mounting block is.

[hidaniel]

Thanks a bunch. I’m not overly sure if it’s original or not but that’s the mounting block on an old Manfrotto #144.