This beautiful 1975 British commemorative issue celebrates the evolution of railway engineering with three iconic locomotives. The 7p stamp features Stephenson’s Locomotion from 1825, marking the Stockton and Darlington Railway’s pioneering steam age. The 8p stamp depicts the elegant Waverley Class Drummond engine of the North British Railway, built in 1876. Completing the set, the 10p stamp shows the powerful Caerphilly Castle of the Great Western Railway’s Castle Class from 1923. Each design pays homage to Britain’s historic contributions to rail transport, featuring the Queen’s Machin portrait in silver. A must-have for railway and British history enthusiasts alike.