This auction is for an Eye Level Focusing replacement mirror for a Rolleiflex Automat K4A, K4/50,3.5,3.5A,3.5B, K4B TLR camera. This mirror is in the hood of the camera and not under the viewing glass. It is for the series of Rolleiflex cameras with the removable focusing hood. It is made from a piece of 1.25mm thick FSM (front surface mirror). The dimensions for the mirror are height 35.75mm, long side 42.5mm, short side 28mm.