1870 (Feb 4) Envelope to Sir Neville Bowles Chamberlain whilst accompanying the Duke of Edinburgh on his tour of India, with 1d red and 1869 6d pl.8 tied by Chatham duplexes, missing backflap, London and Sea Post Office bs Note: Chamberlain served during the First Anglo-Afghan War, Second Anglo-Sikh War, the Indian Rebellion and whose denial to be allowed to enter Afghanistan precipitated the Second Anglo-Afghan War