The Alpa 6b is a Swiss-made 35mm single lens reflex camera produced by Pignons S.A. of Ballaigues. It sits within the Alpa line of precision-built SLRs aimed at professional and advanced amateur users.

At recent UK auction, hammer prices for the Alpa 6b have sat in a narrow band around £780–£820, with the two recorded results giving a median near £800. Because sales are sparse and these are wholesale saleroom results rather than dealer retail, today's value is highly condition-sensitive and a clean, working body with matched lens tends to anchor the upper end of what the camera sells for.