Casquette Class A4 Mallard - World Fastest Steam Locomotive

Class A4 Mallard - World Fastest Steam Locomotive. The LNER Class A4 4468 Mallard, built in 1938, set a world speed record for steam locomotives at 126 mph. With its sleek, aerodynamic design and powerful engine, it symbolizes the golden age of British rail. Operated by the London and North Eastern Railway until 1963, it remains a railway legend.