cover 1869 envelope (some faults and without indication of origin) addressed to New Jersey, bearing U.S.A. 10c. green ("E" grill) just tied by 5-rayed cancel (probably of Yokohama) overstruck by San Francisco cogwheel and with supporting c.d.s. (29.3) adjacent, oval framed "CHINA AND JAPAN/STEAM SERVICE" h.s. in magenta alongside. P.F. Certificate (1970). Photo