Air-Co four-bladed propeller, marked with logo ‘Air-CO, Aircraft Co Lt London', designed for the Roll Royce 250 HP. Flacon engines fitted to the DE.H.4 single engined aeroplane, 1917. Air-Co four-bladed propeller 1917
2 Bladed propeller G927/N40/DG.AB8781/D.2970/P.2260/400 HP LIBERTY / DEH 9A 2 Bladed propeller G927/N40/DG.AB8781/D.2970/P.2260/400 HP LIBERTY / DEH 9A