100 Roubles

Issued during Russia's most economically chaotic post-Soviet years, this coin entered circulation as the ruble was in freefall — inflation exceeded 800% in 1993 alone. The 100-rouble denomination, unthinkable just a few years earlier, became routine pocket change almost immediately after issue, and was itself obsolete within two years as the currency collapsed further toward the 1998 redenomination, which wiped three zeros from the unit.