This one is dated Heisei Year 10, which converts to 1998.
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I believe they are still used in circulation today.
Yep. "Heisei" is the reign-name for the current emperor, Akihito. The Japanese 10 yen is one of the last remaining solid bronze circulation coins in the world.

Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis