ARFO IV - Vintage Rare Russian folding camera

It is first soviet serial folding plate camera. It was made at artel "Fototrud". Initially (from 1929) it was named EFTE, since 1931 - ARFO. Originally, the camera had 90x120mm (3.5x4.5") frame size. In 1936-1938 new versian was produced - ARFO IV. It is better modification, with smaller frame size - 65x90mm.(2.5x3.5"), and with double bellows extension.  It has ability to move front plate in horizontal and vertical directions. Mag tray can hold matte plate or usual taking plate. It has frame viewfinder.