The first Polish coin minted for Red (Halitic) Ruthenia, annexed to Poland in 1340.
According to a recent study by Andriy Kryzhanivskyy (Coins of the Lviv Mint from the 14th and 15th centuries), this is an issue from 1359-1361.
Variant defined by the R7 rarity grade , illustrated by this piece (from the collection of I. Yakovelis).
Silver, diameter 19 mm, weight 1.32 g.