The Steinheil Casca I is a 35mm viewfinder camera from the German optical maker Steinheil München, introduced in the late 1940s as the company's first camera body alongside its established lens production.

Sales data for the Casca I is extremely thin: the only verified UK auction hammer result on record is £230 from a Christie's sale in 1998, so any current value figure today would be speculative. Buyers researching what a Casca I is worth, or how much one sells for, should treat that single historical hammer price as a wholesale data point rather than a current retail guide, and watch specialist saleroom listings for fresh comparables before committing.