The Rolleiflex SL 350 is a 35mm single-lens reflex camera from Rollei, introduced in the 1970s as the brand's entry into the 35mm SLR market alongside its established medium-format line. The black-finish version is less commonly seen than the chrome variant.

Auction data for the black SL 350 is thin: a single UK saleroom hammer result of £950 from 2012 is the only verified reference point, so today's value is best treated as indicative rather than a reliable median. Because that figure reflects a wholesale auction-hammer price rather than a dealer asking price, what a clean black SL 350 sells for at retail can sit higher, and condition will move the number significantly in either direction.