Heinrich Köhler 384 Auction – Day 1 Single Lots: Europe and Colonies, Kingdom of Lombardy–Venetia – The "P.G." Collection

1855/63, 5 cmi. bright green, vertical bisect (used as 2 cmi.) with large margins, tied by light cds. "PERGOLA MARCHE 31 OCT. 63" two small piece. Very fine and most attractive. A great rarity; just two further bisects of this stamp have been recorded, of which one is used on entire. Signed Sorani and Bottacchi, the later with certificate (2024).