The silver model Lancaster was one of only ten such models which were commissioned by the aircraft's manufacturers, Messrs A.V. Roe & Co. and by Rolls Royce (suppliers of the Lancaster engines) and presented to the ten Victoria Cross winners (or their families) who flew Lancasters in the Second World War. On the base stand of the model is a silver plaque inscribed: "A Tribute from the Directors of A.V. Roe & Company and Rolls Royce Limited. To the Memory of Captain Edwin Swales," V.C., D.F.C., S.A.A.F., who was Awarded the Victoria Cross for his great Gallantry and Self-Sacrifice during Operations Against the Enemy on 23 February 1945".