Lot 911N. York, Steamship, circular handstamp canceling 1855, 10¢ green entire to Boston, with "Panama, My 21, 1859" cds and manuscript "By favor of Captn. Pierce R.N."; some cover discoloration, otherwise Very Fine, an unusual usage privately carried to Panama most likely from South America.
Scott No. U16 Estimate $200 - 300.