The Mentor Compur Reflex is a German medium-format SLR produced by Goltz & Breutmann of Dresden, fitted with a Compur leaf shutter rather than the focal-plane shutter used on the maker's larger reflex models. It is an early- to mid-twentieth-century plate/roll-film camera aimed at advanced amateurs and professionals working at waist level through a reflex viewing hood.

Auction data for this model is thin: a single hammer result of £62 at a UK saleroom in June 2025 is the only recorded sale, so a meaningful price range cannot be quoted today. Buyers asking what a Mentor Compur Reflex is worth should treat that figure as indicative wholesale value at auction (commission excluded) rather than a settled market price, and condition of the bellows, shutter and reflex mirror will materially affect what any individual example sells for.