14 September 2011 FDC of single stamp from Arnold Machin Centenary miniature sheet.
No fdcs of the whole sheet available.
Royal Mail decided to mark the centenary of the birth of the sculptor Arnold Machin with a souvenir sheet of ten definitive stamps bearing his iconic image of HM The Queen issued on the opening day of Autumn Stampex, 14 September 2011.
The sheet has conventional gum, but has "full security features except for the security slits" that is, it has an iridescent layer containing the source and year code.
The year code is AM11 and the source code MMIL. In full the relevant line of the overlay reads AL AM11 ROYAL MMIL
A single stamp is on a Royal Mail Definitive FDC with a special Arnold Machin Centenary Picadilly London W1 postmark
From SG MS3222