100 Złotych - Rybek Bass Słoneczny 2013, oksydowane

This piece belongs to Poland's "Fish" series issued by the Narodowy Bank Polski, which leaned heavily on naturalistic themes during a period when Polish commemorative coinage was aggressively courting the international collector market. The oxidized finish — applied deliberately rather than acquired through age — was a production choice intended to amplify surface relief contrast, a technique the Warsaw Mint had refined across several contemporary issues.

The largemouth bass is not native to Poland; its presence reflects a broader 20th-century introduction of North American sport fish into European waterways.