cover 1871 (18 Oct.) commercial envelope (vertical crease towards right and two new flap affixed) to London "via San Francisco" from Hiogo bearing 1870-71 6c. pale carmine (3, overfranked by 2c.) cancelled by Yokohama quartered cork obliterator with Yokohama c.d.s. alongside (23.10) indicating that this cover caught the next day's sailing of P.M.S.S. 'Japan' and with part New York transit c.d.s. Rare. Photo