1911年11月27日,在辛亥革命的历史大背景下，以保路运动为开端，四川省宣布独立，建立大汉军政府。军政部长由尹昌衡出任,而后又被推荐为都督，在他的着手带领和整治下，组织了军政府。保路运动又称铁路风潮。在宣统二年（1910年），英法德美四国银行集结起来逼迫清政府订立借款修路合同。1911年5月9日，清政府在邮政大臣盛宣怀的鼓动策划下，把修路的借款全部用来镇压革命，并宣布了“铁路国有”政策，其实四川修筑铁路的股金，都是来自绅士、商人、地主，且农民还购买了相当大的比例股份。这项铁路国有政策，掀起了轰轰烈烈的保路运动。
四川军政府发行的货币，目的在于筹措军饷，维持政府开支，同时也是满足保路运动的需要，所以“汉”字铜币具有军用货币和民用货币的属性。后期川中各路军阀铸造众多铜币，流通周期也相对较长，再加=上换模修版等原故，导致版别极其复杂。
此钱币正面珠圈内铸“四川铜币”四字，上环为“军政府造”，下环铸“当制钱五十文”字样；背面上方是“中华民国元年”，中央有一个很大的篆书“汉”字，代表了大汉的意思，具有反清意义，周围有18个小圆圈，象征着当年响应辛亥革命的十八个省。一个背面圆圈里有二条线条穿出，俗称为“二毛”，一个背面圆圈有三条线条穿出，俗称为“三毛”，正反两侧都各有一个花瓣。 该钱币发行时间短，发行量极少，收藏投资空间巨大！
On November 27, 1911, against the backdrop of the Xinhai Revolution, Sichuan Province declared independence and established the Great Han Military Government, starting with the Baolu Movement. The Minister of Military and Political Affairs was appointed by Yin Changheng, who was later recommended as the Governor. Under his leadership and rectification, the military government was organized. The railway protection movement, also known as the railway wave. In the second year of Xuantong (1910), the banks of England, France, Germany, and the United States gathered to force the Qing government to enter into a loan and road construction contract. On May 9, 1911, under the instigation and planning of the Minister of Posts, Sheng Xuanhuai, the Qing government used all the loans for road construction to suppress the revolution and announced the policy of "nationalizing railways". In fact, the capital for the construction of railways in Sichuan came from gentlemen, merchants, and landlords, and farmers also purchased a relatively large proportion of shares. This state-owned railway policy has sparked a vigorous road protection movement.
The currency issued by the Sichuan Military Government is aimed at raising military salaries, maintaining government expenses, and also meeting the needs of the road protection movement. Therefore, the "Han" copper coin has the attributes of military currency and civilian currency. In the later period, various warlords in central Sichuan minted numerous copper coins, and the circulation cycle was relatively long. In addition, due to reasons such as mold replacement and revision, the types of coins were extremely complex.
On the obverse side of this coin, the four characters "Sichuan Copper Coin" are inscribed in the bead circle. The upper ring is "Made by the Military Government", and the lower ring is inscribed with the words "Fifty wen Coins to be Made"; Above the back is "the first year of the Republic of China", with a large seal script character "Han" in the center, representing the meaning of "Great Han" and having anti Qing significance. There are 18 small circles around it, symbolizing the 18 provinces that responded to the Xinhai Revolution that year. There are two lines running out of a back circle, commonly known as "Er Mao". There are three lines running out of a back circle, commonly known as "San Mao", with petals on both sides. This coin has a short issuance time, very small circulation, and huge investment space for collection!
