The Minox III-S is a subminiature camera using the 8×11mm Minox film format, introduced in the mid-1950s as an evolution of the post-war Minox III. It was positioned as a discreet pocket camera for documentary, travel and surveillance use, continuing the Riga-origin Minox line under West German production.

With only a single tracked UK auction hammer result on record (£126 in 1999), there is not enough recent data to state what a Minox III-S is reliably worth in today's market. That lone saleroom figure should be read as a wholesale price rather than a retail asking price, and present-day values for clean working examples can sit above or below it depending on cosmetic condition, shutter accuracy and whether the original chain, case and reading aids are present.