造幣局に聞いた！お金の疑問いろいろ – ニコニコニュース
造幣局に聞いた！お金の疑問いろいろ ニコニコニュース
近年の電子マネーの普及は目覚ましいが、貨幣もまだまだ利用されている。そんな貨幣の形や素材、デザインはどのように決定、そして製造されているのだろうか。
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