Plastic-bodied viewer for 2 x 2 inch slides. With plastic lens of Kingston patent, detachable illuminator with provision for 2 U16 batteries. Pushbutton switch. Combined Optical Industries Limited. 2 x 2 Inch Slide Viewer
Colour Prince 35mm slide projector/viewer, 1955-1960. 35mm f/2.8 projection lens. Kayfro Insturments Ltd, Sheffield. Serial No A2313. With two slide transparency cartridges. Colour Prince 35mm Slide Projector/Viewer 1955-1960
Small metal box with opal screen backlit by a 2.5v bulb powered by two 7cm long dry cells. Circuit made when slide inserted into holder. Ilford Limited. With carton. Ilford Transparency Viewer
Folding viewer for 2 x 2 inch slides. With two dry cells light small lamp behind diffuser. With large rectangular viewing lens. Cenei. Cenei B-Scope Viewer
Small viewer in form of camera. Disc with small photographs, 16, of film stars rotated behind viewing lens by simple intermittent mechanism. With carton. Plastic Camera Viewer