"Military Secretary to His Royal Highness... Horseguards, London" and inscribed "On His Majesty's Service", showing fine strike of the circular negative seal type "(crown)/MADRAS SHIP LETER" (HG SD2) of 12 July and framed "UNPAID" (HG SD3), and although marked as such also showing Crowned "FREE" applied in London on arrival; the front a little stained and fragile at places but clear of the first strike. Very rare. Photo