15 Kopecks 7 orbits

The "7 orbits" nickname refers to the seven raised lines encircling the globe on the reverse, a detail that became a collector shorthand distinguishing this type from later Soviet silver issues. Introduced as part of the 1924 monetary reform that stabilized the ruble after the catastrophic inflation of the Civil War period, these coins circulated alongside the chervonets system and represented Moscow's attempt to restore confidence in hard currency.

Silver content was reduced to .500 fineness rather than the pre-revolutionary .500 standard — notably the same figure but achieved through different alloy composition — before the entire small silver series was abandoned in 1931 as Stalin's industrialization drive made metal conservation a state priority.