O 81/22 MY 04" bridge type c.d.s. applied at Pharijong showing, on reverse, "BASE OFFICE/25 MY 09" single ring d.s. and arrival c.d.s. Fine and possibly the last letter written by Bailey before his departure from Tibet on 4th June 1909. Photo" /> cover 1909 (22 May) envelope for Colonel Bailey to his wife in Edinburgh bearing ½a. pair tied by two strikes of the "FIELD P.O. N<V>O 81/22 MY 04" bridge type c.d.s. applied at Pharijong showing, on reverse, "BASE OFFICE/25 MY 09" single ring d.s. and arrival c.d.s. Fine and possibly the last letter written by Bailey before his departure from Tibet on 4th June 1909. Photo | Christie's