Cancellation cover Commemorating the World Chess Championship rematch of 1961

Author: Mikhail Nekhemyevich Tal (1936-1992) and Mikhail Moiseyevich Botvinnik (1911-1995) signedYear: 1961Publisher: USSR Chess FederationPlace: MoscowDescription:One sheet cover with cancelled stamp and decorative chess board in black on light green paper. Commemorative cancel to stamp. Signed by both players, Mikhail Tal and Mikhail Botvinnik, in blue ink, dated by Botvinnik 12 May 1961. Event covers are decorated, stamped and canceled commemorative envelopes. They are created to celebrate an event or note an anniversary. The design (called a "cachet") is generally placed on the left side of the envelope (although there are also "all over" cachets). It explains what is being commemorated on what date, and some times includes an illustration page. Ideally, the stamps used relate to the celebration. Cancels are either obtained in the city of the event. If a special cancellation (one with a design) has been created for the event, you can generally only receive that cancel from the loca