Plate Numbers for SG40/40a: Plate numbers 27 to 68 Plate Numbers for SG40b: Plate numbersR15 and R16 Watermark for SG40/40a:SG40 and SG40a have a large crown watermark. SG40b a type II large crown watermark. Perforation: These stamps are perforated with a gauge of 14.
Die II General characteristics Head and face Facial features: Lines on the face are deeper and more prominent. Eye shading: The eye has more shading. Lips: The lips are fuller. Nostril: The nostril is more defined. Lip and chin: The color indentation between the lip and chin is more prominent. Fillet (headband): The headband behind the ear is more defined. Hair "Williams" lines: An especially prominent 1–2 horizontal, squiggly lines appear in the hair below the "AG" of "POSTAGE".
What is the value of SG40?
A mint stamp that has been previoiusly hinged: £20-£25 A used stamp: £2-£4
What factors detemine the upper and lower range of the stamp value?
The main factors for the mint stamp is centering. For the used stamp a light postmark is preferred with centering also a consideration.