Queen Elizabeth II - Security Machin M11L

Iridescent overprint "ROYAL MAIL. One elliptical hole in each vertical side. U shaped slits. No source code. Date code M11L.
Print: De La Rue & Co. Ltd.

Country:	United Kingdom
Type:	Postage stamps
Series:	Queen Elizabeth II - Security Machin
Nominal:	1 £
Year:	2011
Material:	2 phosphor bands
Size:	21 x 24 mm
Perforation:	Syncopated Die Cut 14½ x 14