Lot 51529 – 1862-68 1s slate-grey, neatly cancelled “A10”

1862-68 1s slate-grey, a large example with perforations clear of design, neatly cancelled “A10”; one corner perf lightly. creased and small split at left, a fine and exceptional example, ex Peter Jaffé and “Tatiana”, with yellow BPA (2021) certificate which states “there is no consensus as to the original colour of this controversial stamp” (SG £900).