Halzer attributed to Konrad V Kącki (1412-39) or Konrad VII the White (1439-50).
Variety without additional characters.
Obverse: Eagle walking to the left, with a serpent in its talons, surrounded by M-O-L.
Reverse: Piast eagle facing left, in a shield surrounded by M-O-L.
Silver, diameter 12 mm, weight 0.38 g.