cover 1860 (11 Nov.) stampless envelope (thinning on face) addressed to The Aide of Commandent in Chief on board the Warship 'Imperatrice Eugénie', in the Gulf of Petchili bearing a fair strike of "CORPS EXP. CHINE/BAU A" c.d.s. and a fine strike of the scarce open-figure "30" (officer's mail); a fine cover and especially scarce internal use. Ex Sir Percival David