Topps issued two sets in 1975, the base set was the standard 2.5 by 3.5-inch (89 mm) size and the "Mini" issue which was of an identical design and content, but 20% smaller in size. Topps never released production numbers, but collectors believe that fewer mini cards were produced, making them slightly rarer than the full-sized cards.
Since 1965, the Canadian candy company O-Pee-Chee produced virtually identical, but smaller, sets identical to the Topps issue of the same year. The Canadian printed cards were printed on grey cardstock and featured French and English text on the reverse.
In 1974, Topps bought out A.&B.C. Gum of London, England, a company which had been a long time producer English and Scottish soccer cards. 1975 marked the first year for the Topps branded cards in the United Kingdom. Topps issued two sets in the United Kingdom featuring soccer players. The cards fronts are basically identical to the 1975 Topps baseball cards issued in the United States.