25c Deep Green, Large Die Proof on India (568P1). Die sunk on 202 x 151mm card, typed "Approved September 28, 1922" and signed by Postmaster General Hubert Work, blue control no. 1175565 on back, beautiful rich color, Very Fine and rare, we have not offered another example since 2004, Scott value as unsigned proof, accompanied by a photocopy of a letter from Hubert Work stating this and other proofs were prepared for presentation to President Calvin Coolidge

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