Variety with a border only on the obverse and with the initials AT on the reverse and the III type of bust distinguished by Łukasz Ciura. Exactly the same inscription variant is unlisted at Ciura catalogue, on the obverse of the offered coin we read CASIM D G RE POL & SVE MDL.
Rarer variety of Krakau 6 groschen, distinguished in the Łukasz Ciura catalogue with the R3 degree of rarity.