Great Britain 1993 4p new blue (2 bands) "Machins", SGY1669a.
A very fine unmounted mint imperforate horizontal pair, with full original gum, printed on NFCP/PVA (bluish) paper with two blue-fluorescent phosphor bands.
A rare modern Machin error, with only eight imperforate pairs recorded, of which four are known creased.
A particularly attractive uncreased example of this striking production error.
GB Specialised Catalogue No: U132Ea.
SG Catalogue Value: £950.
