Maurice Peper

Maurice Peper was a Dutch Jewish diamond cutter of émigré Polish Jewish parents. He became a communist and then Soviet GRU military intelligence officer, known as a scout in Soviet intelligence parlance. Peper was a specialist in wireless telegraphy and used the aliases Wassermann and Hollander to disguise his identity in messages. Between late 1940 and July 1942, Peper worked first for Soviet agent Anatoly Gurevich and then in the same period, Soviet agent Konstantin Jeffremov as a courier who operated between Johann Wenzel in Brussels and Anton Winterink in Amsterdam.