This commemorative stamp from Norway honors Sam Eyde (1866–1940), a prominent Norwegian engineer, industrialist, and founder of the Norsk Hydro company. Issued in 1966 to mark the centenary of his birth, the design features a stylized wheat ear intersected by fine lines symbolizing electricity and industrial development—reflecting Eyde’s role in harnessing hydroelectric power for fertilizer production. The minimalist Scandinavian design style is typical of mid-20th-century Norwegian philately. Printed in bold red tones with a denomination of 55 øre, the stamp highlights Norway’s technological and agricultural progress.