On the obverse a crowned letter K with circles on the sides, all in a decorative cartouche, on the reverse a crown with the letters R-K-P at the bottom and on the sides, all in a decorative cartouche. Krzyzhanivskiy does not note such a variation of the obverse - circles on the sides of the letters, which are characteristic of the Vladislav and early Louis regiments. Taking into account that hybrids of Ludwig's regiment with the letter K on the obverse are known, it can be concluded that the offered piece, was struck in the final years of the reign of Casimir the Great, or already posthumously, during his successors. The failure to note the coin in the Krzhanivskiy monograph, which takes the Pula into account, with a rarity grade of R8, leads us to assume that the rarity of this piece should be estimated at least at R7. The Ruthenian pula was the first Polish copper coinage minted by Casimir the Great, Władysław Opolczyk and Ludwik Andegawenski, and until 1650 it remained the only money minted in copper in the Polish lands. Minted with care, in a non-precious metal and having a low circulation value, the pieces that have survived to this day are mostly in poor condition, and obtaining a well-preserved piece is difficult. An unlisted variety of the Casimir the Great pula in the catalogs. Great rarity, for the best collections.