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lettered 'AT'
perforated 14
type 32 surcharge
An exceptionally fine and fresh close to large four margin unused original gum example with very crisp deep embossing
Accompanied with a 2000 Karl Louis Certificate of Authenticity
Great Britain 1927 3d violet (Waterlow printing) imprimaturs, SG423var Sierra Leone stamps lettered 'AT'Great Britain 1927 3d violet (Waterlow printing) imprimaturs, SG423var. A superb unmounted mint, with full original gum, bottom marginal imperforate "G 27" control block of four imprimaturs printed on Mixed Furnish paper with "BPMA" handstamps on reverse. A unique positional piece. 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