Great Britain 1936 1s bistre-brown, SG449var.
A superb unmounted mint, with full original gum, imperforate bottom right hand corner marginal strip of six imprimaturs with "BPMA" handstamp on reverse, annotated in margin "Cylinder No 3 for registration W Reardon 5/2/36".
A unique philatelic piece 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.
SG Catalogue Value: £27,500.