Grandma's Old Foreign Currency?

I agree that there's a great chance of upswing with little chance of decline... of that I have no issue.

The "what if" scenario which is quite probable is that silver may remain in this $10-20 range for a LONG LONG time.

If that's the case the longer you hold the more inflation actually eats away at your gains. Hence why I said if the OP really has no interest in the coins it's always better to take the money and put it to use NOW in something they want versus sitting on it and letting the value slowly discentagrate.