The Wünsche Mars Detective is a German-made detective-style plate camera produced in the late 19th to early 20th century by Emil Wünsche of Dresden. Detective cameras of this type were designed for discreet handheld use, housing a plate or roll-film mechanism inside a plain wooden box rather than a folding bellows body.

Documented UK auction activity for the Wünsche Mars Detective is thin: the only recorded hammer result in our data is a single sale at £600 in 2017, a wholesale saleroom figure that excludes buyer's premium. With just one data point on record as of 2026, this is not enough to establish a reliable market price or median worth today, and what a clean example sells for in the current auction market will depend heavily on condition, completeness and bidder interest on the day.