The general diameter of the folded five is 3.2--3.6cm, the regular script refers to the writing method, Chongning Tongbao regular script large characters?
Chongning Tongbao. During the Chongning reign of Emperor Huizong of the Song Dynasty (1102--1106) ). The inscription on the face is "thin gold style" written by Emperor Huizong, commonly known as "iron scratched silver hook". There are many versions such as Xiaoping, Zhewu, and Dangshi.