1937-47 1d scarlet, unique horizontal marginal tête-bêche Registration block of 48 spanning the sheet with a 11.5mm vertical gutter margin between two tête-bêche blocks of 24

Typewritten Registration Certificate on the reverse reading:

“This sheet of 1d Unified Stamps, 240 set, was taken in the presence of the Post Office Control Officer at the factory of Messrs. Harrison & Sons Ltd., at High Wycombe for the registration of the first print of King George VI stamps of this denomination for books.

(Signed) D.P. Dell
Senior Staff Officer,
26th July 1937.

(Initialled) JWH
Stores Department,
Stamp Section.”