Yes it is interesting. Especially the Joseph Story, Commentaries. I think the take-away for that clause of the Constitution is that Americans had the right to take silver ore to a mint and have real coins issued to them. And that means that Americans still likely have that right if any state can offer that service to them...

Or at least until some Legislatures attempted to take the right away from the States in the 1830s but that would seem to be unconstitutional.