It was recorded that the karat was 170 monme (25.88% gold) in the early times and later it was changed to 240 monme (18.33% gold), however an example in Mint Museum has 200 monme (22.00% gold), which is considered as common.
金品位は初期は170匁位（金25.88%）で後に240匁位（金18.33%）に変更されたとされるが、造幣博物館に展示されている手本金では二百匁位（金22.00%）となっており、これが一般的とされる。