Los-Nr. 6201

PUERTO RICO-UNITED STATES: 1871, dated lettersheet, privately carried to St. Thomas and posted at the British PO, franked with horizontal pair 2 d. blue, plate 13, tied by duplex "C51/St. THOMAS PAID A SP 13 72" and sent to Philadelphia with frontside "MY steamship 10"; very fine (SG Z5)