A very rare half-penny with an error in the king's name, where instead of the correct notation WLADISLAI the engraver put WLADISALI.
Known to Sebastian Pawlikowski so far from only one piece.
Defined by him by the degree of rarity UN (from unique).
Type dated 1408-1410, characterized by the absence of additional mint marks, a straight crown and the letters A classical (instead of Gothic).
