Lot
8 
Great Britain, 1840, 1d black, "Rainbow" color trial, cancellation experiment, with voided corners, state 2, bottom sheet margin horizontal strip of four from the bottom row of the sheet of 12, on white wove (136x44mm), showing traces of blue cancels and a circular violet stain on third stamp, treated with hydrogen cyanide acid staining brown causing erosion hole in left pair, manuscript "Pr B, & CW" initialing (Prussian Blue and Common Wetting) by Joshua Bacon; light diagonal crease in right margin well away from designs, Very Fine. S.G. Spec. Nos. DP20F var. Estimate $3,000 - 4,000.
A RARE PERKINS, BACON & CO. CANCELLATION EXPERIMENT OF THE 1840 1D "RAINBOW" COLOR TRIALS.
Realized: $2,200