We've seen plenty of watches inspired by aircraft, but never one that's actually made from one. Until now. The Bremont P-51 Watch (£7,450; roughly $11,800) is a chronograph chronometer built using original parts from the 1944 Mustang WWII aircraft P-51K-10, otherwise known as "Fragile but Agile." Original aluminum from the plane's fuselage is integrated into the dial and movement of the P-51, while the dial itself is inspired by the clocks found in the plane. Other features include an internally rotating bezel, a calf-skin leather strap with stainless steel buckle, and the ability to whip flyboys into a froth thanks to its one of 251 limited edition status.