cover 1872 (19 June) envelope to London "Pr French Packet" bearing 1863-71 30c. mauve tied by a fine strike of "Y1" in violet-blue with large "1/3" rate mark in red ink alongside, reverse shows very fine strikes of oval "FORWARDED BY CHARLES LEGGATT & CO", despatch, Hong Kong and London c.d.s.; a little roughly opened at top, fine. Photo