Pulo - Boris Konstantinovich Gorodets

Boris Konstantinovich ruled Nizhny Novgorod-Suzdal during one of the more turbulent stretches of the Golden Horde's fragmentation, when tribute obligations and succession disputes made independent coinage both a political statement and a practical necessity. The pulo was the lowest denomination in the medieval Russian copper hierarchy, used for small market transactions where silver wire money — the dominant currency — was simply too valuable to cut small enough.

The principality itself was absorbed by Moscow in 1392, a year before Boris died, leaving his final issues circulating under a ruler who no longer held his throne.