'Ediswan' RAF Light Bulbs with original packaging

on offer are a pair of vintage Air Ministry marked 'Royal Ediswan' 24 Volt 80 watt GLS gas filled pearl bulbs with BC connectors. Each comes in its original card and paper packaging clearly stamped 'By Appointment to H.M.King George VI.' Interestingly the paper wrapping is stamped in red 'Important. In view of the paper shortage this wrapper should not be thrown away or destroyed but should be handed to the Local Authority or organization responsible for salvaging paper in your district.' Each bulb is clearly stamped with AM (Air Ministry) and the stores reference nos. 5L/50. The Edison and Swan Electric Light Company Limited was an English manufacturer of incandescent lamp bulbs and other electrical goods. It was formed in 1883 with the name Edison & Swan United Electric Light Company with the merger of the Swan United Electric Company and the Edison Electric Light Company. We are not sure of the exact RAF application for these bulbs but it seem likely they originate from circa WWII/ 1940's. We can not guarantee they still function as intended but like all our stock are for sale as a collectable only. Each bulb measures 2" (6 cm)