The Coronet 3-D is a British-made stereo camera produced by Coronet of Birmingham, designed to shoot paired images on roll film for stereoscopic viewing. It sits in the budget end of the post-war stereo market, aimed at amateur users rather than serious enthusiasts.

At UK auction in recent years, hammer prices for the Coronet 3-D have sat in a narrow £38–£44 band across the limited results on file, giving a midpoint near £41. With only a couple of saleroom records to anchor today's value, what one of these cameras sells for depends heavily on cosmetic condition and whether the original case and viewer are present.