Heller 1430-1448 Sigismund of Luxemburg Duchy of Wroclaw Wroclaw

very rare variety with a small circle on the reverse,
obverse: the head of Saint John,
around the letter M O W M O W,
reverse: a lion,
below it a nicer one - a small circle,
glossy,
a variant recorded only in Paszkiewicz's catalog: 1.9 a2