cover 1901 (12 Sept.) "Maus" cover registered to Germany (13.10 arrival), bearing on face 1ca., 2ca. and 24ca. cancelled by bilingual "CANTON" c.d.s., together with Hong Kong 20c. on 30c. vertical pair applied and cancelled at Hong Kong and additionally tied by framed "I.P.O." tie-print. Fine and colourful. Photo