Denier Bracteate - Conrad IV Ulm mint

Conrad IV died in 1254, making the upper bound of this issue's date range attributable to the interregnum period or to his successor claimants rather than to Conrad himself — the attribution to Conrad IV is essentially a bracket of convenience. Ulm was a key imperial mint city on the Danube, and bracteate production there during the mid-thirteenth century reflects the fragmentation of minting authority that accelerated after the Staufen collapse.

At 0.49g and struck on a single-sided flan, bracteates of this weight class were vulnerable to folding and cracking in circulation. Berger's corpus remains the standard reference for southwest German bracteates of this period.