Thanks very much! I am going to look further into it so I can familiarize myself a little
I enjoy collecting the 1859 Victorian large cents of Canada and Haxby has it down to a beautiful science that you can use the location, shape etc. of the die cracks to identify to die. That is how I was approaching it. It is all sorts of fun - here's his site:
https://www.vickycents.com/index.html