What does Daoguang Bao Tong's regular script Xiaoping mean by carving a mother on the back of Baosu Bureau?

Daoguang regular script Xiao Ping Su Ju engraving is a money mold used in the Daoguang period of Xuanzong in Qing Dynasty (182 1- 1850). It means:

Qian Wen's word "Daoguang Bao Tong" is a regular script;

Xiaoping is a sample (below 26MM) that is usually traded;

Back Baosu Bureau refers to the name of Baosu Bureau written in Manchu on the back of a coin; Baoju is the Manchu Mint Bureau, and Baosu Bureau is the Suzhou Money Bureau (added in the early years of Kangxi).

The carved mother is a money model carved from copper blocks or tin-lead blocks. When casting money, use the carved mother as a mold and turn the mother money over. Give these mother coins to the local mint, and all localities will make model coins with them.

That's what it means. Please accept the satisfactory answer.