It is a double format camera using 120 film for 6x6cm frames and 4.5x6cm frames with a mask. The lens is Yashimar 80mm f/3.5 in Copal B shutter with speeds 1/25-1/300. It has X sync, plain filter mount and two red windows (no frame counter). It is basically a Yashica-A without the hood emblem and film speed reminder on the film winding knob. Probably, it was primarily a home-market product, using the same bits as the Yashica-A, and perhaps some older lenses in stock. It is rare in Europe.