Great Britain 1912 'Seahorse' Master Die Proof (stage 2), SG399var

Great Britain 1912 'Seahorse' Master Die Proof (stage 2), SG399var.

A very fine example printed in brown on soft thick card (102 x 77mm).

A very rare proof of the highest importance from the most successful stamp issue of the King George V reign.

Provenance: Ex Hassan Shaida

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