It’s a bit interesting. For example: Chongning Tongbao in the Northern Song Dynasty, the types of treasures include big-character Dabao, Dabao, Angbao, wide-headed treasure, narrow treasure, hanging treasure, long-footed treasure, long-short treasure...etc. Chongning Chongbao, the treasures include Xiaochangbao, Zhangzubao, Fangguanbao, Lidianbao, Angbao, Jiangbao...etc. Qian Zhibao's calligraphy in the Northern Song Dynasty: Zhen, Xing, Li, Zhuan, Kai and Mi calligraphy.
Qing Dynasty: The ancient coin treasure characters include Erbao and Foubao. There are also different writing styles in Liao, Jin, Xixia, and Yuan Dynasties.