9x18 stereo camera for beginners. Rare in this building: construction of beech wood with green cloth bellows, lined with black cloth. The two bodies and the bellows is fixed to the base by means of a" keyhole" . The rear body is mounted on a carriage that slides on the base. The latter is moved by a worm that allows the focus. The objectives are simple achromatic type. The shutter is done simply by vertical movement of the front shutter pivot. Presence of a double blind frame. Around 1880. not very common chamber.