I think It's a great idea just make it a required lvl 30 crafting. Think about it people at lvl 30 you can mine coal and that makes more money. Even selling salman makes more money than this. Also you have to carve/stamp/whatever a symbol to make it real money. This gives 25 crafting and 25 theiving xp. However, it only does 100 at a time so you cant get 100000 unfinished coins and immediately finish them. Sorry for my poor english. Hope you could understand it.