Mamiya-Sekor C 35mm f3.5 for Mamiya 645  type_Self Timer but that's not the case:

but that's not the case: you can use this lens on anything with an M mount

4cm across

A hard-sided case with a metal exterior finish and a structure made of wood or hardboard

with only minor cosmetic wear from light use and under 8000 actuations

and the rangefinder is clear and accurate

Mamiya-Sekor C 35mm f3.5 for Mamiya 645 &nbsptype_Self Timer but that's not the case:The 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.