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

1854, Study of the variety "Perf. 7" at left, presented upon album pages, comprising nine single examples, one on peiece, from eight different plates, illustrating this visually prominent perforation variety and its nuances, noted one example from plate 196 where the six pins have failed to penetrate the left side leaving an indentation giving the appearance of an imperforate left side, an interesting assembly, scarce and mostly fine.  SG Spec. C1m = £7'650+ for nine singles.rnReference: "Stamp Perforation: The Somerset House Years 1848 to 1880", by R. Simpson & P. Sargent.