cover 'Geo. H. Gray & Co., Boston', die cut small circular printed express co. (also independent carrier) label in Red on white, used on 1847 gray folded transatlantic letter from England to Philadelphia (via Boston), put in the U.S. mails by Gray & Co., red Boston c.d.s., label actually tied by light cover file fold, minor edge splitting along cover file folds, otherwise very fine, scarce, a similar cover (also to Boston) is mentioned in ASCC photo