Very rare error cards. Nine O-Pee-Chee cards from various years, all with blank backs. All are in ex. or better condition unless noted. 1979/80: Stan Weir Lyle Moffat David Shand Dave Keon (has #297 written on the back in the top corner). 1971/72 Red Berenson (vg/ex) 1983/84: Bob Carpentar Mark Osborne Doug Soetaert Red Wings Leaders (Ogrodnick)