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Auction: 12015 - The Chartwell Collection - GB Line Engra
Lot: 41

Great BritainLine Engraved Essays and ProofsThe "Rainbow" Colour TrialsCancellation Experiments: State 3 in a sheet of ten in red-brown, sheet "No 1" coded "H8" with manuscript notation by Mr. Joshua Bacon showing the effects of various reagents used to try and remove the "No 712" cancellation on six of the stamps, with plain soap [3], potash [4], tartaric acid [7], prussic acid [8] (which has dried and damaged the paper), creosote [11] and (turpentine) [12]. A wonderful example of these charismatic and important sheets. S.G. Spec. DP20F, £95,000

Sold for
£25,000