1879/80: Nicaragua rouletted 10 c. vermilion and 25 c. green used on 1882 cover (embossed 'Secretaria de Hacienda / Nicaragua seal on reverse) mailed to Paris tied by framed "3/G" handstamps of Granada, sent via the British Post Office in Greytown and additionally franked by Great Britain 1872 4 d. vermilion pl. 13 (Gi. Z7) tied by bold strike of four bar "C57" obliterator in black (the sole known usage of this obliterator on letter) for postage paid as far as British P.O. in Panama (as in the inter-island rate). 'Panama' datestamp of British P.O. on obverse (Jan 5, 1882) with 'T' marking in black alongside and charged on arrival in Paris (Jan 28) via London at '32' décimes to pay with '2.20' credit to Great Britain. A dramatic mixed franking of great rarity, the latest recorded combination cover as Nicaragua joined the UPU on May 1, 1882. A cover of excellent provenance and quality for the Postal History connoisseur. Cert. Holcombe (1987). Provenance: Collection Maurice Burrus (7 April 1964), lot 375. Collection Dr. Paul Kornan (27 Sept 1997), lot 120.