Very rare issue.
Variety with teeth to the center of the obverse field extending from the obverse border.
Removed from jewelry.
Austria, Sigismund (1446-1490), Guldiner 1486, Hall mint
Obverse: figure of a prince in a crown, holding a sceptre in his right hand, on the sides a shield with the coat of arms of Austria and a helmet with a jewel, teeth extending from the border to the center of the obverse field
•SIGISMVNDVS:✿ :ARCHIDVX•AVSTRIE•
Reverse: knight in armor on a horse facing right, carrying a banner, under him the date 1486, in the ring 16 coats of arms of Austrian provinces
Diameter 40 mm, weight 31.31 g