Cash coins with flower (rosette) holes (traditional Chinese: 花穿錢; simplified Chinese: 花穿钱; pinyin: huā chuān qián) are a type of cash coin with an octagonal hole as opposed to a square one, they have a very long history possibly dating back to the first Ban Liang (半兩) cash coins cast under the State of Qin or the Han dynasty.[1] Cash coins are characterised by their round shape and square hole, but Huachuanqian are cash coins with an octagonal hole.[2] These octagonal holes are mostly found in Chinese cash coins, but are in some rare instances also found in Japanese, Korean, and Vietnamese cash coins.
During the imperial period in Chinese history a relatively small number of Chinese cash coins were minted with what are termed "flower holes", "chestnut holes" or "rosette holes", these holes were octagonal but resembled the shape of flowers.[3] The exact origin and purpose of these variant holes is currently unknown but several hypotheses have been proposed by Chinese scholars.[4] While Huachuanqian are believed to have disappeared in China following the transition from Ming to Qing, they continued to appear among Korean cash coins until the Koreans abolished their cash coins.
Western numismatic sources often refer to these cash coins as having "star" holes.[5] Among coin collectors Huachuanqian sell for a premium compared to their square holed counterparts with the same inscription.[5] If the shape of these holes were only hexagonal then they were referred to as "turtle shell hole coins" (龜甲穿錢).[6]
While initially the field of Chinese numismatics neglected the study of Huachuanqian, after an article published in the journal Chinese Numismatics in 1994 brought this phenomenon to mainstream attention, wider interest in these cash coins was generated and they have since been seen as their own separate category of cash coins.