Sudan 1931-37 Air, a small group of proof material comprising vignette plate proof showing near complete die impression and guide lines, in black on 's.g." wmk paper, imperforate colour trials 7½p. (3) in indigo and deep blue, indigo and reddish violet, and deep green and blue-green, all from the lower left corner of the sheet and 10p. (4) with vignettes in brown, frames in greenish blue, blue-green (2) and reddish violet, all but one marginal and all on ungummed "SG" watermarked paper, and imperforate plate proof vignette in ultramarine, a horizontal marginal pair on surfaced wove paper. A scarce and attractive group.
Sudan 1931-37 Air, a small group of proof material comprising vignette plate proof showing near complete die impression and guide lines, in black on 's.g." wmk paper, imperforate colour trials 7½p. (3) in indigo and deep blue, indigo and reddish violet, and deep green and blue-green, all from the lower left corner of the sheet and 10p. (4) with vignettes in brown, frames in greenish blue, blue-green (2) and reddish violet, all but one marginal and all on ungummed "SG" watermarked paper, and imperforate plate proof vignette in ultramarine, a horizontal marginal pair on surfaced wove paper. A scarce and attractive group.
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/77237/Internet%20Image%201.jpg "Quelle: Dix Noonan Webb")
/77182/Internet%20Image%201.jpg "Quelle: Dix Noonan Webb")
/77164/Internet%20Image%201.jpg "Quelle: Dix Noonan Webb")
/121468/Internet%20Image%201.jpg "Quelle: Dix Noonan Webb")
/71386/Internet%20Image%201.jpg "Quelle: Dix Noonan Webb")
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