The Mackenstein Francia Jumelle is a French-made stereo (jumelle-style) plate camera, a body type produced in France from the late 19th into the early 20th century by the Paris maker Mackenstein. As a jumelle, it uses twin lenses to expose paired stereoscopic images on glass plates, and was sold as a hand-held alternative to the folding cameras of its era.

Sales data for the Francia Jumelle is extremely thin: the only recorded UK auction hammer result we have is £250, achieved in 2004, so there is no meaningful current range or median to quote for today's market. Anyone trying to gauge what a Francia Jumelle is worth or sells for in 2026 should treat that single saleroom figure as a historical data point rather than a live valuation, since wholesale hammer prices for obscure French stereo cameras are highly condition-sensitive and depend heavily on completeness of plate holders and shutter function.