A 1531 Torun penny described in the upcoming catalog by Gregory Romanczyk as a Type 5A bust and Type 4 eagle.
The coin has the catalog number GT1531_20 and, despite its lack of rarity grade, is a very interesting numismatic coin due to its very nice and clear bust minting.
Variety with the ends of the legends PRVS/PRVSS.
Obverse: in the pearl rim bust of the ruler to the right, in the outer rim legend:
SIGIS I REX PO DO TOCI PRVS;
Reverse: in the pearl rim the coat of arms of Prussia, in the outer rim legend:
GROSS COMV TERR PRVSS 1531;
