Auction 309-320 - Great Britain 1840–1841 Europe & Overseas - Day 5

1864, Study on Perforation Machine development, neatly written-up on two album pages, comprising four 1 d. red items multiples, all unused and with marginal top or side, including one corner, plates include; 87, 162, 204  and 222, these also illustrate the marginal pin marks, a very eye catching selection, and mostly fine.