sets of three different series alongside 500 and 10,000 yen Nagano commemoratives. A limit of 5,000,000 coins each (133,000 for proofs) was set for the 5000 yen denomination. Three different Olympic themes were used on the obverse sides of the coins as a design feature: Hockey (series 1), Biathlon (series 2), and Paralypic Skier (series 3). For the reverse a Serow is featured along with the value and date. Another 23 years passed before the Japan Mint made 5000 yen commemorative coins again. In 2021 (3rd year of reiwa) the Japan Mint produced a 0.25 oz gold coin to celebrate the 150th Anniversary of Japan's Modern Currency System. This coin is notable for being the first 5000 yen gold coin that was reduced in both weight and size, and the first 0.25 oz gold coin ever minted by Japan. The set diameter of 30 mm and weight of 15 g that had been used for all of the prior coins was changed to 20 mm and 7.8 g for this gold issue. For a design, the obverse features the character 圓 (yen) which was used on gold one yen coins issued in 1871. On the reverse, the chosen design combines features from all of Japan's currently circulating coins (¥1, ¥5, ¥10, ¥50, ¥100, & ¥500). These coins were limited to 20,000 struck, and were released individually inside special holders. List of commemoratives Japanese coins are read with a left to right format: "Emperors name" → "Number representing year of reign" → "Year" (Ex: 平成 → 2 → 年). Collecting The value of any given coin is determined by survival rate and condition as collectors in general prefer uncleaned appealing coins. Finding a worn or cleaned example isn't an issue for this denomination as they were specially made for collectors. In terms of added value, its debated within the numismatic community if breaking up modern proof sets to grade individual coins is a worthwhile investment or not. Notes References External links Commemorative coin list - Japan Mint website (In English) Japanese yen coins Commemorative coins of Japan