red two-line handstamp with matching "9 Mr" Franklin mark on reverse of November 16, 1768 folded letter from St. Thomas, Jamaica to Madeira, Spain, black "12 Mr" New York Franklin mark, endorsed "P the Rachiel" from New York, "Sh 2/6" rating, manuscript "Rec'd the 4th May 1769 + forwarded by Gentleman yr. very Humb. Serv't. Alexander Forbes", received June 8, very fine and rare early Philadelphia ship letter, ex-Rowe