Alan Turing commemorative stamp

The UK Royal Mail is issuing a Turing commemorative stamp as part of the Alan Turing year commemorations.  Bletchley Park (which has its own Post Office) is issuing a special first day cover designed by Rebecca Peacock of Firecatcher Design for the "Turing Bombe" stamp (shown above). The design is based on Turing's work with patterns and their basis in mathematics. The stamp celebrates his genius in creating the "Bombe" machine to speed up the decryption of Enigma codes. The cancel is a facsimile of a Bombe rotor. Two other covers will also be issued using the work of artist Steve Williams as part of the Turing Centenary year celebrations. Funds raised will go the Bletchley Park Trust. This special first day cover can be ordered online here.