1867 - 20c light lilac-blue Bigola, block of six,
1867
1867 - 20c light lilac-blue Bigola, block of six, cancelled by dotted numeral '1867' of Pra (Genoa). Largest known block of 20c in this shade. Cert. E.Diena (Sassone 26a – approx. Euro 27,000).
sat 16 May 2026
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