GB 1913 SG379var Mint Watermark double, one Inv & Rev
Stock Code: P190004050
1913 4d Grey green (Wmk. Royal Cypher doubled, one Inverted & Reversed). Very fine unused o.g. block of four showing Double watermark variety, upright and a second watermark inverted & reversed. An amazing watermark variety presently unlisted but to be recorded in the next Specialised Vol.2 Catalogue as Spec. N23(1)da.
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