WWI propellor boss

WWI propellor boss, stamped Darraco Motor Eng Coy Ltd London 12 CYT, RAF 4A BE12 18251 1756, height 22.5cm, with label "A WWI 1914-1918 propellro taken from an RAF BE12 machine - a single seater fighter with four proellors. It had an RAF 4A motor 150hp and armed with a single synchronised Vickers gun".WWI propellor boss, stamped Darraco Motor Eng Coy Ltd London 12 CYT, RAF 4A BE12 18251 1756, height 22.5cm, with label "A WWI 1914-1918 propellro taken from an RAF BE12 machine - a single seater fighter with four proellors. It had an RAF 4A motor 150hp and armed with a single synchronised Vickers gun".