GB 1958 SG573var Mint

GB 1958 SG573var Mint
1958 2d Light red brown “Dollis Hill Phosphor Trial“. Very fine perforated block of four on gummed unwatermarked specially prepared handmade paper, with an all over yellow phosphor showing a strong phosphor responce. Experiments with yellow phosphor were short lived due to fears of toxicity of the phosphor ink. Very scarce. Spec. ST5(5).

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2200.00 £ Elizabeth II

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Stock Code: P11205144

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