Among the officially minted coins, the different styles are known such as one with 'Chokaku' (long framed surrounding the hole of a coin), 'Saikaku' (thin frame), 'Chukaku' (standard frame), 'Kokaku' (wide frame) and 'Chokaku' has a slightly longer '貝,' the part of the Chinese character '寳,' as well as the rectangle frame surrounding the hole.
公鋳のものには「長郭」、「細郭」、「中郭」、「広郭」といった手代わりが知られており、「長郭」は「寳」字の「貝」がやや縦長で郭も僅かに縦長の長方形である。