RT15 USA #30A Horz Pair (very nice stamps affixed upside down but with part of the imprint at the left) on a Trans-Atlantic Cover New Orleans, La to Spain via New York 4 MAR 1861 USA Used in the CSA. Folded letter complete in Spanish which originated in New Orleans. The stamps are tied by two partial strikes of the New Orleans, La CDS 4 MAR 1861. The cover arrived in New York where the red New York Br. Pkt mark was applied 13 MAR 1861. The British Packet “Adriatic” of the Cunard Line carried this cover and sailed on that date arriving in Queenstown 23 MAR 1861. Cover then delivered on its way to Spain with a London transit mark on the back 25 MAR 1861 plus two Spanish receiving marks dated 27 and 29 MAR 1861. Large “12 Rs” handstamp on the face of the cover is a Spanish mark and represents either a foreign debit/credit mark or perhaps postage due on delivery. A truly spectacular cover. SOLD