In the world of collecting coins, a opinion that claimed that coins minted between 1835 and the following year were called 'Chokaku' or 'Chukaku,' those between 1837 and 1842 were 'Saikaku,' and those after 1847 were 'Kokaku,' but the other argued that this categorization did not match the ratio of the number of existing coins and coins minted.
貨幣収集界には天保6年から翌年鋳造分を「長郭」あるいは「中郭」、8年から13年までのものを「細郭」、弘化4年以降のものを「広郭」とする説もあったが、これでは現存数と鋳造数の比率に整合しないとの説もある。