Great Britain 1965 ½d orange-red (Watermark Crowns. 2 bands reacting blue Whiter paper) imprimaturs, SG610var.
A superb unmounted mint, with full original gum, left hand marginal horizontal pair of imperforate imprimaturs each with a "BPMA" handstamp on reverse, showing variety "Extended right fraction bar" in position R1/1.
A unique marginal horizontal pair from the first approved printing sheet for the issue.
Exceptional provenance as it was released from the British Postal Museum Archives in 2014. Prior to this it was stored in the museum archives in climate controlled vaults since being printed and is therefore in uncirculated mint condition.
GB Specialised Catalogue No: SB16b.
Ex. Booklets.
