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硬币系列（上）家喻户晓的流通硬币人民币硬币系列分流通硬币和非流通硬币两大类。本文只谈家喻户晓的流通硬币，非流通硬币即贵金属纪念币暂不涉及。流通硬币系列可以按四个专题去收藏：流通硬币，套装硬币；流通纪念币，装帧流通纪念币。
Coin Series (Above) Well-known Circulation Coin The RMB Coin Series is divided into two major categories, split-stream coins and non-negotiable coins. This article only talk about household currency coins, non-circulating coins that precious metals commemorative coins temporarily not involved. Circulation coins series can be four themes to collect: circulation coins, coins set; circulation commemorative coins, framed circulated commemorative coins.