Mamiya-Sekor C 35mm f3.5 for Mamiya 645 strobe Nikon PB-6D spacers attach between

Nikon PB-6D spacers attach between the rail and the front and rear standards of a Nikon PB-6 bellows

A nice camera

Focal length and aperture are unknown

and the camera runs

the camera end is a standard F mount but practical compatibility will depend on the shape of your camera (some bulkier AF and digital cameras will require an additional extension tube- not included- to clear the back of the rail)

Mamiya-Sekor C 35mm f3.5 for Mamiya 645 strobe Nikon PB-6D spacers attach betweenThe Mamiya Sekor C 35mm f3. 5 is a wide angle lens for Mamiya 645 medium format cameras. Relatively compact, this lens provides the same field of view as a 21mm lens on a full frame or 35mm camera which is very wide! In excellent condition, with clean glass and good function. Includes front and rear caps and carrying case.