Heller 1430-1448 Sigismund of Luxemburg Duchy of Wroclaw Wroclaw

a very rare hybrid of mint marks,
obverse: head of Saint. John,
around the letter M ? W M ? W,
reverse: lion,
below it a crescent,
shiny;

Kopicki: -,
Friedensburg: 554n /-,
Paszkiewicz: 1.9v