Obol Undetermined Friesach marks

Friesach pfennigs — and their fractional obols — were among the most widely circulated coins in central and southeastern Europe during the 12th and 13th centuries, accepted from the Adriatic coast to Bohemia and used extensively in Crusade-era financial transactions. The "undetermined marks" classification reflects a genuine attribution problem: Friesach-type coins were struck by multiple ecclesiastical and secular authorities simultaneously, sharing obverse and reverse dies across mints at Friesach, St. Veit, and beyond, making definitive issuer assignment frequently impossible even with reference to the CNA typology.