This 1995 Sherlock Holmes The Six Napoleans 1 crown coin cover is a first day cover by Mercury Covers. It celebrates the 100th anniversary of the return of Sherlock Holmes and hosts a brilliant uncirculated 1 crown coin depicting Sherlock with his pipe and a Royal Mail stamp with a scene from The Six Napoleans novel. Cancelled postmark Sherlock Holmes 221B Baker Street London 5th May 1995.
The coin cover is pre-owned and enjoys a limited issue of 2,000.