Grivennik - Peter I

The grivennik — a ten-kopek piece — was part of Peter I's sweeping monetary reform that dismantled Russia's archaic wire-money system and imposed a decimal coinage structure modeled on Western European practice. The Krasny Mint in Moscow was one of several facilities pressed into service during this transition, and output quality between 1718 and 1720 was inconsistent enough that planchet irregularities are genuinely common rather than exceptional on surviving examples.

The .728 fineness was a deliberate reduction from earlier standards, driven by the fiscal demands of the Great Northern War against Sweden, which consumed enormous state resources through precisely this period.