The draft. when you turn 18 as a male you have to register for the war. If there is a war or anything and they need people they will draft you to go.
Classical period composers valued form above all else.
They owned very cheap ones for 20 cents, they believed it would go places so they invested.
I believe it was the Rhine or something close to that, where they had mined iron. I could be wrong though, good luck.