There are several terms in the question, copper, copper, copper, lead and tin. These terms should also be clarified first. What is white copper?

I'm afraid some things can't be solved by mathematics. The identification of old silver dollar is a collection of time, orientation and space technologies. When was the time, where was the orientation produced, the degree of oxidation or corrosion during storage, and the technology made at that time? Can we use only a small amount of data to model?