★ An extremely rare denarius of Adalbero I ★

SWITZERLAND. Basel, Bistum (?). Adalbero I, 895-916. Denarius (Silver, 14 mm, 0.84 g, 10 h). ADALBERTO Cross set on base. Rev. Monogram of BASCI or BA CIV. Belfort 804. HMZ 1 -. Sincona 70 (2021), 3172. Extremely rare and darkly toned. Very fine.

From the collection of a Swiss scholar, formed over the past thirty years, Leu Web Auction 16, 24 May 2021, 4844.

The attribution of this issue to Basel is likely, but not confirmed.