uspcs-logoThe U.S. Philatelic Classics Society is the successor of “The Three Cent 1851-57 Unit” (Unit Number 11) of the American Philatelic Society. It was originally founded by a group of ’51 to ’57 specialists that included Dr. Carroll Chase, Stanley B. Ashbrook, and Leo J. Shaughnessy. Since its founding, the Society has broadened its scope to include postal issues and postal history from the Stampless era up to the Bureau Issues.