 During the Bakumatsu period in 1859 Mexican dollars were even given official currency in Japan, by coining them with marks in Japanese and officializing their exchange rate of three ""Bu"".They were called "Aratame Sanbu Sadame" (改三分定, "Fixed to the value of three "bu"").Meanwhile, local governments issued their own currency chaotically, so that the nation's money supply expanded by 2.5 times between 1859 and 1869, leading to crumbling money values and soaring prices.