Collecting the Top 100 Series, Issue #3. A collector's guide to collecting the Top 100 O-Pee-Chee hockey cards four eras: O-Pee-Chee’s earliest years (from 1933 to 1941); the Original Six era (1942 to 1967); the Expansion Era (1968 to 1979); and the Gretzky Years (1980 to 1989).