A model of a currency shortage
用不可分割货币的随机匹配模型解释19世纪中叶前常见的货币短缺现象，并评估禁止硬币出口政策的合理性。
Until the mid-19th century, shortages of currency were common. Moreover, a frequent policy response was a prohibition on the export of coins. We use a random matching model with indivisible money to explain a shortage and to judge the desirability of a prohibition on the export of coins. The model, although extreme in many regards, represents better than earlier models a demand for outside money and the problems that arise when that money is indivisible. It can also rationalize a prohibition on the export of money.