It depends on which dynasty, but paperweights are rarely made of copper, because, after all, scholars despise the smell of copper, and in ancient times, 1.8 CM, which was illegally cast by the people and controlled by the copper market, was not the width of paperweights. The paperweight of white marble is generally about 5~7CM wide, and it is best to attach pictures. I guess what kind of molds they should be, or it depends on the age. Is there any patina? Weight, whether it is pure copper ~ ~ these are all to be considered. You can see for yourself first. I hope it helps you.