2 C. stamp black opal green with vertical overprint in Type II, mint never hinged with original gum and clean first hinge, previously only 5 examples known - all mint never hinged / postfrisch / without gum, signed Dreyfus and expertise Lothar Herbst VP (2024) "The condition is flawless. An extremely rare rarity.", Michel 3,000.- - we can offer this truly rare variant with this stamp for the first time!