The Hasselblad 500 C/M is a medium-format 6x6 single-lens reflex camera taking 120 roll film, part of the Swedish-made V System with interchangeable lenses, viewfinders and film backs. The "Clock" refers to examples carrying a clock-style frame counter or display variant within the 500 C/M line.

Sales data for the 500 C/M "Clock" is very thin: a single UK auction hammer result of £252 in October 2025 is the only datapoint on file, so today's value guidance rests on that one wholesale-level saleroom price rather than a settled range. Final prices vary widely with cosmetic condition, screen type and whether a lens, finder or back is included, and a single result should be treated as indicative only.