Queen Elizabeth II - Decimal Machin

Headtype IIa (Two curved lines in the hair below the Diadem next to the front curl; dark background; curved base of the bust; irregular necklace pearls, one is missing)
White or bluish illuminati.. Read more »on under the UV lamp.
Value type: I (Thin Digit and P)
Position of 3: 1.65 mm from the left edge; 2.65 mm from the bottom edge.
SG colour = "ultramarine".

Country:	United Kingdom
Type:	Postage stamps
Series:	Queen Elizabeth II - Decimal Machin - Normal Perfs
Nominal:	3 p
Year:	1973
Material:	coated, fluorescent (FCP), one central phosphor stripe
Size:	21 x 24 mm
Perforation:	comb 14¾ x 14¼