Polushka

The Pskov Republic maintained a stubbornly independent mint long after most neighboring Russian city-states had been absorbed into the expanding Muscovite principality. The polushka — a half-denga — was the smallest denomination in circulation, and Pskov's issues were struck by a wire-cutting method that produced irregular, often crudely shaped flans. Moscow finally annexed Pskov in 1510, ending local coinage production entirely.