Apparently, I am hearing anecdotal evidence here in NC now, people ARE in fact passing them off as US currency. Someone pays $25 for $15 worth of silver, and then spends them wherever clerks are likely to accept them at the $50 face value.
That actually IS fraud -- at least on the part of the people who are passing them. I'm not sure how the case can be made against NotHouse for his customer's act of fraud; but seriously, marking $15 worth of silver with the face value of $50 is kind of asinine. Especially when you make it look close enough to a Liberty Eagle that cashiers are accepting them at face value.
Mind you that IS just anecdotal evidence but...

I'd be pissed if I lost $35 every time someone bought a bag of chips with one of these things in my store.