The construction plan for the mint facility was proceeded by Kosei YURI, from the time he was a finance office vice prefectural governor, but it began in earnest after OKUMA placed a Mint Dorm along with setting up the Ministry of Finance and appointing Kaoru INOUE to the position of mint head, and the construction of a mint factory was proceeded in Osaka City.
造幣施設の建設計画は由利公正が会計官副知事の時代より進めていたが、大隈が大蔵省設置とともに造幣寮を置いて井上馨を造幣頭に任命（明治2年8月18日）して以後本格化し、大阪市に造幣工場の建設が進められた。