2000 Won Millennium

South Korea issued this denomination exactly once. The 2,000 won face value has never appeared on a circulating coin before or since, created specifically for the year 2000 commemorative program and never repeated. The Bank of Korea's decision to use an entirely new denomination rather than an existing one was deliberate — a clean break from the standard series to mark the occasion without implying the value would enter regular circulation.

Mintage ran into the tens of millions, which keeps values modest despite the one-time denomination status.