1879, UPU 1c. green and horizontal pair with upper sheet margin 5c. blue tied by "PANAMA-UNION PAQ F. AN. No. 2 3 MARS 86" (Salles 1415) to cover via "SAINT-PIERRE MARTINIQUE 10 MARS 88" and "NEW YORK MAR 29" to Boston with arrival mark, some light aging, horizontal fold not affecting adhesives, a very attractive nd scarce entire
