Denga - Boris Alexandrovich

Boris Alexandrovich ruled Tver from 1425 to 1461, a tenure that coincided almost exactly with the final collapse of Byzantine authority and the prolonged agony of Muscovite-Tverite rivalry. Tver at this point was still a genuinely independent power — Boris negotiated directly with Lithuania and maintained a court capable of commissioning its own chronicle tradition. His denga issues reflect a mint operating under real political autonomy, not a satellite operation.

The Grishin-Prokopov reference HP II#7091B places this within a well-documented but internally complex series where die-cutting quality varies considerably across the reign's four decades.