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Auction: 24015 - Stamps and Covers of Great Britain
Lot: 1121

(x) Great Britain
Line Engraved Proofs and Essays
"Rainbow" Trials
1840 1d. red-brown part sheet of ten impressions from the fugitive ink trials marked "No 3 plain paper with Magnesia", stamps 2, 4, 7, 8, 11 and 12 overprinted "No 712" and tested with "Tantric Acid", "Potash", "Tur[pentine]", "Prussic Acid" and "Creosote"; endorsed in the hand of Joshue Bacon "2g". Exceptionally rare, there being only five such sheets in private hands and a remarkable working document. Photo

Subject to 5% tax on Hammer Price in addition to 20% VAT on Buyer’s Premium.

Sold for
£11,000

Starting price
£11000