Great Britain 1924 ½d Green, SG418var – Tête-Bêche Gutter Pair Imprimatur
A superb unmounted mint imperforate imprimatur, featuring a horizontal tête-bêche gutter pair of the 1924 ½d green (Watermark Block Cypher), with full original gum and excellent centring.
This striking and extremely rare format displays the stamps inverted in relation to each other across a bold gutter margin, intended solely for internal reference and not issued to the public.
The reverse bears “BPMA” (British Postal Museum & Archive) handstamps, verifying its official imprimatur status.
Exceptional provenance as they were released from the British Postal Museum Archives in 2014. Prior to this they were stored in the museum archives in climate controlled vaults since being printed and are therefore in uncirculated mint condition.
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