Auction 333-341 Western Australia & Great Britain - Day 3

Machine 'A': Selection of seven single 1857 1 d. reds cancelled by the Pearson Hill Experimental second Trial Machine cancel in black (Dubus 2), including a First Day usage (21 Sept 1857) and Codes; 'A' (3), 'M', '2', '3' and '4'. The codes '2', '3', and '4' are rare and no covers are recorded with these codes.  Condition varies although the strikes are clear and fine. A rare selection.