1859 20 Gr., dark slate (ardesia scuro), block of eight (4 × 2), positions 72-75/82-85, with four margins all around. Fresh mint and mint nh multiple with full original gum.
A rare and highly impressive exhibition multiple, displaying exceptional freshness, rich colour and remarkably well-preserved original gum. One of the finest surviving multiples of this high value.
Expertise: Cert. Giacomo Bottacchi, AIEP (2026).
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