The Plaubel Makinette 16 Prototype is a sub-miniature camera attributed to the German maker Plaubel of Frankfurt. As an unreleased prototype rather than a production model, it survives in very small numbers and is encountered almost exclusively in specialist auctions.

Auction evidence for this prototype is extremely thin: a single UK saleroom hammer result of £4,200 from September 2005 is the only data point on record, with no further sales to establish a working range. Because the figure reflects a wholesale auction hammer price for a prototype, today's value depends heavily on provenance, completeness and competing bidders on the day, and any sale price could deviate substantially from that historical result.