Official. 1943-44 1a brown-orange, watermark 27 with Type O10 opt, perf 13 x 13½, fresh o.g., natural paper flaw still a fine example of this major rarity. One of the key stamps of the KGVI reign. BPA cert (2024). SG O70, cat £16,000. (Estimate 7000 GBP)
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Monday December 16th, 2024, 08:00 GMT
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