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The Japanese Mint Set (ミントセット) formally called Standard Coin Set (通常貨幣セット), is a set of uncirculated coins sold by the Japan Mint. These sets were first issued in 1969 (Shōwa 44) as “standard coin sets” consisting of denominations of 1, 5, 10, 50, and 100 (166 yen total). Some of these early sets included commemorative 100 yen coins before the 500 yen coin was introduced in 1982 (666 yen total). The original name “standard coin set” gradually transitioned to “mint set”, as by 1990 the latter name was in common use.^[1] Starting in 1998, this new name was made official by the Japan Mint.^[2] Each mint set^[a] comes with a “year plate” which is placed in a plastic case and then placed in an outer paper case alongside the coins.^[3] As with other specially made mint sets, these coins are targeted towards collectors rather than for circulation.