A typologically rare coin.
In the entire history of Polish minting, wide trojaks are minted only twice. The first time was the first Polish trojaki, minted in Cracow in 1528. It took more than 30 years to wait for the second one.
It's a striking low proof issue from 1562, size-wise resembling sixpences (more than twice as heavy as standard trojaks, more than 20% larger in diameter). Minted only in this one vintage, the coin is the last trojak with a portrait of this king.
The issue, which unfortunately by the lousy silver used to strike it, as well as the carelessness of the mint workers (frequent shortages), is characterized by the poor condition of the pieces that have survived to the present day, which was also emphasized by Tadeusz Iger.
Variety with a cross at the top of the obverse.