GB 1924 SG423var wi Mint watermark inverted B24 control block
Stock Code: P190004037
1924 3d Pale dull reddish violet (Wmk. Block Cypher, Inverted). Very fine unused o.g. B24(I) control block of six lightly mounted on top three stamps only, with a small tone stop on the bottom left hand stamp nevertheless a scarce multiple bearing two perfectly unmounted o.g. examples printed by Waterlow from plate 1b. Scarce. Spec. N38(3)a.
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