1d. red-brown, plate 90, handstamped ‚SPECIMEN‘, corner sheet marginal block of 18, AA / BI, showing marginal inscription and plate number ‚90‘, the block showing the characteristic re-cut frame lines on this plate and the blind ‚A’s in the first vertical coloumn, excellent vibrant colour, two vertcial creases as can be expected and a few minor thins not affecting the dramatic appearance! Fresh and fine with large part or unmounted original gum. Illustrated (as a block AA / CI) in „Specimen Stamps & Postal Stationery of Great Britain“ by Marcus Samuel and Alan Huggins on page 17. A spectacular and wonderful multiple (S.G. Cat. GBP 36.000)
