Queen Elizabeth II - Security Machin

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

Country:	United Kingdom
Type:	Postage stamps
Series:	Queen Elizabeth II - Security Machin
Nominal:	50 p
Year:	2009
Material:	2 phosphor bands
Size:	21 x 24 mm
Perforation:	Syncopated Die Cut 14½ x 14