Go-ryo ban (five-ryo coin) minted from August 1837 was originally the idea of Shinjo GOTO the fifteenth of Obanza (an organization associated with minting); however, the coin is also said to have been intended for bail-out measure for the organization because Oban minting emerged at the time when the organization was struggling to cope with economic difficulties after they had lost the role to mint coins to kin-za (an organization in charge of casting and appraising of gold during the Edo period) because the coin was currency.
天保8年（1837年）8月から鋳造された五両判はもともと大判座の後藤十五代真乗が発案したものであったが、通貨であることを理由に金座に鋳造担当を奪われたことから大判座の財政難対策に苦慮していたところに登場した大判鋳造であり、大判座救済策の意味合いもあったとされる。