Like maybe coins are rare enough that they're not completely fungible, there is a slight preference for being able to know which one is which?
Say, people want to have affordances to trace the provenance if that starts to matter.
It could also be a legitimate aesthetic preference for currency units to be unique rather than uniform.
Maybe uniformity is hard but why make the dies much bigger than they need to be and use different parts?
Striking is downstream of casting, technologically because you need to make harder things and perform extra steps to do that.
Like maybe coins are rare enough that they're not completely fungible, there is a slight preference for being able to know which one is which?
Say, people want to have affordances to trace the provenance if that starts to matter.
It could also be a legitimate aesthetic preference for currency units to be unique rather than uniform.
Maybe uniformity is hard but why make the dies much bigger than they need to be and use different parts?
Striking is downstream of casting, technologically because you need to make harder things and perform extra steps to do that.