The Ensign Pocket Twenty was a folding camera for 120 film, taking 6x9cm images. It was made in England by Houghton Butcher under their Ensign brand. The Pocket Twenty is not self-erecting - to open the camera, you lift the foot to release the bed, open the bed and then pull the lens post forward to the click stop.
There were two aperture settings, for "ordinary light" and "brilliant light", and two focus settings, for "Close ups" and "Views" - set by sliding the lens post to different positions. The everset shutter had a single instantaneous (I) speed, plus B and T settings.