The Seymour Block of 12 Penny Blacks Hong Kong stamps perforated 'SPECIMEN' (type B9)

perforated 'SPECIMEN' (type B9)

Great Britain 1872 3d rose Plate 6

SG Catalogue price is £28

and was evidently written during one of Einstein's sea voyages aboard the Hamburg-Amerika Line

The Seymour Block of 12 Penny Blacks Hong Kong stamps perforated 'SPECIMEN' (type B9)Great Britain 1840 1d black Plate 7 the finest and most impressive extract from the famous mint block of 28 from the Seymour Collection, SG2 Great Britain 1840 1d black Plate 7. The finest and most impressive extract from the famous mint block of 28 from the Seymour Collection. A spectacular large four margin unused, with original gum, right hand marginal block of twelve (3 x 4) on experimental thin paper (Manuscript "241b" in margin indicating the