1851 - 'Mercury' 3c blue, 3rd type, 21 examples (one block of six, one block of eight, three pairs and one single) on wrapper from 'MILANO 20/11' to Bergamo. Some copies slightly trimmed, but an outstanding overall item. Each stamp represents a newspaper rate. Rare piece, signed A.Diena and Oliva; cert. E.Diena (Sassone FG3 - over Euro 30,000)
sat 16 May 2026
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