Queen Elizabeth II - Security Machin M17L

Iridescent overprint "ROYAL MAIL". No source code. Date code M17L. One elliptical hole in each vertical side. Broken U slits.
Print: De La Rue & Co. Ltd.

Country:	United Kingdom
Type:	Postage stamps
Series:	Queen Elizabeth II - Security Machin
Nominal:	2.55 £
Year:	2017
Size:	21 x 24 mm
Perforation:	Syncopated Die Cut 14½ x 14