LONDON AND EXETER RAILWAY POST OFFICE - The 'No1/MST-L and E-RPO' MISSENT HANDSTAMP. 1857 envelope with Die 2 1d red-brown on blued paper (SG 29) (corner fault) lettered QK from Hungerford to Marlborough via London. On reverse a good strike of this very scarce railway instructional mark partly overstruck by Marlborough and London date stamps AP 18 1857. (Ref 49186).
