Mother coin
BASIS FOR CASH COINS IN THE EARLY MANUFACTURING (OR CASTING) PROCESS
Mother coins; Mother Coin; Mother Coins; Seed coin; Seed coins; Mother cash coin; Mother cash coins; Seed cash coins; Seed cash coin; 母钱; 母錢; Mǔ qián; Ancestor coin; Ancestor coins; Ancestor cash coin; Ancestor cash coins; 祖钱; 祖錢; Zǔ qián; 雕母; Diāo mǔ; Engraved mother coin; Engraved mother coins; Iutsushi; 鋳写し; Matrix coin; Matrix coins; Matrix Coin; Matrix Coins
Mother coins (), alternatively known as seed coins or matrix coins, were coins used during the early stages of the casting process to produce Chinese, Japanese, Korean, Ryukyuan, and Vietnamese cash coins. As cash coins were produced using sand casting mother coins were first produced to form the basis for all subsequent cash coins to be released into circulation.