Coper was born in Chemnitz, Germany, and fled to Britain in 1939. He was interned as an enemy alien, and held in Canada for two years; on return to Britain in 1942, he served as a conscientious objector in the Non-Combatant Corps.
Coper's work was widely exhibited and collected even in his lifetime. Today, it is found in the collections of major museums around the world, including the Metropolitan Museum of Art, the Victoria and Albert Museum, Museum de Fundatie, the Sainsbury Collection, and York Art Gallery, as well as in private collections worldwide. Among his best known works is the set of three 7-foot candlesticks on the high altar at Coventry Cathedral, commissioned in 1962.Wikipedia