Pulo - Boris Alexandrovich Goroden

Boris Alexandrovich ruled Tver from 1425 to 1461, a period during which the principality maintained a precarious independence between an expansionist Moscow and the declining Golden Horde. Tver had its own mint tradition dating back to the late 14th century, and the pulo — a low-denomination copper piece used for everyday petty transactions — was struck in quantity under Boris as part of a broader effort to supply local markets with small change that silver wire coins (the dominant medium) were too valuable to fill.

HPF#2800 places this among the attributed issues, though Tver puli of this period are notoriously difficult to assign with precision given the variability of dies and the absence of consistent inscriptions across the series.