Unique (?) on cover usage of Niassa Provisorio overprinted stamp

Unique (?) on cover usage of the local “Provisório” overprinted D. Carlos 15 Reis value MF48; 5th March 1903 usage of the rare D. Luis Niassa overprint 10 Reis blue (HG 1; some toning and minor faults but with genuine message: “lonely place but warm”) addressed to England with additional 15 Reis Provisório O.P. tied by fine IBO CDS having Zanzibar CDS on front. This is believed to be the only on cover example of this rare local 1903 overprint to have been recorded (Lot 3190 Cavendish Auction Nov. 1999 – The John Sussex Collection).

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