NOSSI-BE, 1889, 25c on 30c Brown, Double Surcharge (8a; Yvert 5b).
Original gum, lightly hinged, subtle shift of surcharge, excellent centering, bold color and sharp impression, minute perf thin on reverse (likely due to hinge removal), Very Fine, an exceptionally rare double surcharge error, especially in original gum condition, signed Calves, with 2019 Scheller certificate, unpriced in Scott as original gum, Scott $2,200.00 as used (which is far more common), Yvert €5,500
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