The Duke of Edinburghs old 1954 Lagonda 3 Litre Drophead Coupe .The car that won Aston Martin Lagonda Ltd its first Royal Warrant, the 1954 Lagonda 3 Litre Drophead Coupe that H&H is to be sold at auction on April 20th 2016 at IWM Duxford, Cambs – The car was built to the special order of HRH, The Prince Philip. See swns story SWPRINCE. Finished in a bespoke shade of Edinburgh Green matched to Grey leather upholstery, the luxurious four-seater Convertible was 1 of just 20 MK1 cars made and used by The Duke of Edinburgh for personal transport up until 1961. A regular at The Thursday Club where fellow members comprised the likes of Baron Nahum, David Niven, Peter Ustinov and Francis Bacon, Prince Philip drove the Lagonda to Cowdray Park for polo matches and Cheam prep school to drop off Prince Charles. The estimate of £350,000 to £450,000 is arguably three to four times what an ordinary Lagonda 3-Litre DHC would be worth. The Lagonda has covered some 50,000 miles from new. Prince Philip took the Lagonda on a tour of The Commonwealth in 1956-1957 and so there are numerous photos of it at the 1956 Melbourne Olympics and elsewhere. The 3-Litre is also featured in several Pathe News films and countless newspapers and magazines from the period.