The waxed paper wrapper for this chewing gum states "Start A Collection Of 500 Buttons." In addition to this set of presidents, sets were issued for baseball players, generals, Indians and movie stars (see set #1082) as well as others. These are 13/16" lithos with paint that was very susceptible to attracting dirt and chipping. However, paint on this group is Exc. to N. Mint. The presidents are a basic set of 30. Missing from our photo, but included is Martin Van Buren. The set was also issued with an error button and this group includes both the error "Howard H. Taft" as well as the corrected version "William H. Taft." Exceptionally clean paint and the Taft error button is rarely seen as it was obviously withdrawn.