cover 1877 (5 Mar.) registered envelope to San Francisco, U.S.A. via N.Y. bearing 20pf. (2½d.) lilac-carmine, blue-green and yellow (I printing) horizontal pair cancelled by double arc d.s., with circular framed "Paid/Franco" h.s. in red and showing three-line New York registered d.s. and "CARRIER" c.d.s. on reverse. Scarce first printing franking to an unusual destination. M. 18a. Photo

Details
cover 1877 (5 Mar.) registered envelope to San Francisco, U.S.A. via N.Y. bearing 20pf. (2½d.) lilac-carmine, blue-green and yellow (I printing) horizontal pair cancelled by double arc d.s., with circular framed "Paid/Franco" h.s. in red and showing three-line New York registered d.s. and "CARRIER" c.d.s. on reverse. Scarce first printing franking to an unusual destination. M. 18a. Photo