Proof impressions of continuous Krag machines comprising a machine with the place name omitted and thick vertical bars at either side of the die head, one die with the time and dated “11.45 AM / 7 MAR 10”, the other die only with the time, on a Post Office O.H.M.S. envelope marked “Trial – No Place Name”; and November 1910 Krag impressions on separate pieces from London E.C. or London F.S. both endorsed with notes. Very unusual. (3).