A Post-War RAF Oxygen Regulator Mk XI C, Mk XI D, Reference no.6D/1275, Serial no. 846/61,...
A Post-War RAF Oxygen Regulator Mk XI C, Mk XI D, Reference no.6D/1275, Serial no. 846/61, marked with a broad arrow **Fitted to a wide variety of aircraft including Supermarine Spitfire, DH Vampire, Gloster Meteoretc