25 000 Won Taejon International Exposition

The 1993 Taejon Expo — formally the Daejeon International Exposition — was South Korea's first World's Fair, held from August to November of that year under the theme "The Challenge of a New Road of Development." It attracted 108 participating nations and over 14 million visitors, functioning as much as a showcase of South Korean industrial and technological ascent as an international event. The Bank of Korea issued a suite of commemorative coins tied to the exposition, of which this gold piece was the highest denomination.

The .925 fineness is notably below the .999 typically associated with modern bullion issues, placing this squarely in the commemorative rather than investment category.