The Leica M Monochrom is a 35mm-format digital rangefinder. Prototype examples are pre-production units made before the camera entered general retail circulation, and they reach the secondary market only occasionally.

Sales evidence is thin: a single UK auction hammer price of £3,250 was recorded in May 2024, and as of today that remains the only data point we have for this specific prototype. Because prototype Leica bodies trade in a narrow collector niche at saleroom level (wholesale, before commission), individual results vary widely with provenance and documentation, so one sale should not be read as a settled market value.