Queen Elizabeth II - Decimal Machin

1st Class stamp sold for 20p. Either top or bottom sides are imperforate. Only issued in booklets.
Headtype Ib (Two curved lines in the hair below the Diadem next to the front curl; dark backgr.. Read more »ound; flat base of the bust; irregular necklace pearls, front of the bust rounded, the side cross in the diadem is closed at the top left).
Very bright under the UV lamp, whiter than PCP, lights up.
Cut top.
Value type: I (Thin digit and ST, close together (3.70 mm * 3.00 mm)).
Basic position of I: 1.85 mm from the left edge; 2.90 mm from the bottom edge.
(Michel GB Special: 1280.24.1)

Country:	United Kingdom
Type:	Postage stamps
Series:	Queen Elizabeth II - Decimal Machin - Normal Perfs
Nominal:	1st Class
Year:	1990
Material:	advanced phosphor coated (ACPB) with strong brightener
Size:	21 x 24 mm
Perforation:	comb 13¾ x 14¼