The Big Exchange (Russian: Менялы) is a 1992 Russian-American comedy film directed by Georgiy Shengeliya.
[1][2][3] The plot centers on the 1961 monetary reform in the Soviet Union.
This involved the denomination of all currency 10:1; conspicuously, the copper kopecks (1/100 of a ruble) were excluded from the exchange due to the expense of re-minting them.
Thus, effectively making them 10 times more valuable.
The protagonists of the movie are tasked by a Soviet government functionary (who is also a secret millionaire) to enact a get-rich scheme which involves them touring the country and exchanging the old paper banknotes, soon to be on their way out, for small copper coins.