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PERU - REVENUES CONSULAR SERVICE 1938 10c deep blue IMPERF DIE PROOF printed in the issued colour with a die number above and attached onto 'For Approval' archive card, with various manuscript printer's notes and with 'Approved' and 'A.L.S.' cachets on reverse. Overall size approx 150x230mm. Fine condition, very attractive and unique exhibition item from the ABNC archives.