GB 1870 SG94var Pl.12 Mint (Dr. Perkins blued paper).
Stock Code: P10112726X
1870 4d Vermilion PL.12 (Dr. Perkins blued paper). Superb unused o.g. left hand marginal horizontal imperforate pair lettered RG-RH, a lovely example of this scarce experimental printing with magnificent blueing. Spec. J59b.
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