This is part of one of those "great" deals touted by an impressive sounding "international" society. It comes complete with "certificate of authenticity." It has a nicely cancelled (first day) stamp and a "limited edition proof sterling silver" medallion which does sport a nicely engraved mail coach. Original owners pay an arm and a leg for these things. The stamp is one of master engraver Slania's works and is one of his usual "tour de forces."