1888 cover franked with 20c orange "Estero" overprint, canceled in transit by the "Malta July 23, 1888 A25" duplex, sent to Livorno, where it arrived on 26th July, some cover faults and repairs, otherwise fine and scarce usage of the "Estero" overprint via the British Post Office, signed Peter Holcombe, with his 1997 certificate ("A rare and unusual usage") (Image)

Est.US$1,000