The XK120 debuted at the 1948 London Motor Show in open two-seater form with handmade alloy bodywork over an ash wood frame. The “120” in the name referred to the car’s 120-mph top speed, which made it the world’s fastest production car at the time. In response to increased public demand, steel panels were utilized beginning in 1950 to facilitate wider-scale production. The Fixed Head and Drop Head Coupés were added to the line-up prior to the conclusion of…