Lot 1279
GB SG X884 1976 9½p error of colour study





Important Great Britain, Including the Steve McGill Grand Prix collection of Machins | S26002
Auction: 11 February 2026 10:30 GMT
Description
1976 study page on the famous 9½p bright purple-magenta (FCP/PVAD, two bands) error of colour, illustrating the composition of the sheet where the incorrect ink solvent contaminated the cylinder. Includes a 9½p pair used on piece in an intermediate shade of the error of colour, a pair with Post Office training bars, two cylinder blocks of 6 (from the No Dot and Dot panes) showing degrees of the ink solvent and a right-marginal block of 14 again showing degrees of ink solvent on the top row at top left. The lot includes relevant certificates (not certifying items as the true error of colour) and a photocopy of a letter from A.D. Walker discussing the error. An interesting lot for the specialist. X884





