The Stirn Vest Camera is a 19th-century German concealed detective camera, designed to be worn under a waistcoat with the lens protruding through a buttonhole to make circular exposures on a rotating plate. This six-exposure configuration, supplied with its original box, represents the complete presentation as sold when new to late-Victorian amateurs.

At recent UK auction, hammer prices for the Stirn Vest Camera with box have ranged from £1,100 to £2,000, with a median around £1,600 — figures reflecting saleroom wholesale levels rather than retail dealer asking prices. As of today in 2026, what a boxed example is worth varies sharply with completeness: the original card box, instructions and any spare plates materially lift the price, and a missing or damaged box can pull value toward the lower end of the range.