15 Kopecks Uralmashinostroy

Uralmashinostroy was the vast construction trust responsible for building the Uralmash heavy machinery plant in Sverdlovsk — one of the flagship projects of the First Five-Year Plan. During the early 1930s, the construction site operated almost as a self-contained settlement, and like many large Soviet industrial projects of the period, it issued its own scrip to pay workers when central banking infrastructure couldn't keep pace with the cash demands of a mobilized workforce.

These construction-site tokens of obligation circulated only within the enterprise's own stores and canteens. Once Uralmash was operational and normalized into the Soviet economic system, the scrip was withdrawn and largely destroyed — survivors are genuinely uncommon.