Football cigarette cards, trading cards and stickers issued around the world, from the 1880's through to the present day and even some that haven't even been issued yet. Alan Jenkins (email@example.com).
Rangers have issued another set of scratch cards this season, though I only know of two of them - 13 more to discover. UPDATE (15-04-2018 09:32): Thanks to Lindsay for identifying three more cards. 1976/77 1977/78 1996/97 1997/98 2003/04