The Gaumont Stereo (Spido, Model D) is an early stereoscopic plate camera produced by the French manufacturer Gaumont, designed to expose paired images for stereo viewing. It dates from the era when stereo photography on glass plates was a mainstream amateur format.

Sales evidence for the Stereo (Spido, Model D) is thin, with a single UK auction-hammer result of £100 recorded in April 2025 — a wholesale saleroom level rather than a retail asking price. On that limited basis, today's value sits around £100, though condition, completeness of the plate holders, and working shutters can move the price meaningfully in either direction.