This camera was sold under several names including the Ricoh TLS (see AP 20th August 1975). In this case, if the lens is a Sigma 39-80mm f3.5, it's a Sigma Mk.1 (How did they come up with that name!). It was marketed in 1975. "Due to be available in September/October this year" AP, 23 July 1975. I doubt it sold well as they are not often seen for sale.

Peter Loy