HERO of the H.M.S. "BIRKENHEAD" SHIPWRECK DISASTER, Sierra Leone postal history 1852 letter from Lt-Colonel Alexander Seton written at Sierra Leone 29th January posted in GB QV 1d pink PSE to Edinburgh with MR 15 and MR 15 transit and arrival backstamps. This is the only letter he wrote from Sierra Leone and the penultimate letter before the tragic disaster in Simon's Bay in the early hours of 26th February 1852 which took about 445 lives. A 4 page account of the disaster accompanies as prepared for the December 2018 British West Indies Study Circle journal. £1200