G.B. TO PERU VIA PANAMA - 6d-RATE COVER WITH PRE-U.P.U. PERU...

G.B. TO PERU VIA PANAMA - 6d-RATE COVER WITH PRE-U.P.U. PERU 10c BROWN POSTAGE DUE ON REVERSE; 16 Dec. 1878 env. (opened out for display) from Liverpool to Lima "via Panama" with pl.16 6d Grey tied by a duplex but also having a long format Peru 10c Brown Postage Due (corner tear from opening) on the reverse tied by a fair purple 2-ring "LIMA/PRINCIPAL" cds. When Peru joined the UPU on 1 April 1879, this combination of Postage Dues on fully prepaid incoming mail ended. Exhibition Item. [Illust. in PSNC, p.156.]Cross Reference: PERU, OVERSEAS DESTINATIONS, LANCASHIRE - LIVERPOOL, POSTAGE DUE STAMPS & COVERS