OH MY GOD
I just went to the bank looking for half dollars to go through.
I got three rolls of them, 60 coins, and out of those, 53 were older, 40% silver halves.
53*.1479(net wt silver per coin, in oz)*17.44(current spot price of silver per oz)=
$136.70!
And the face value of those coins is, uh, 53*.5, or $26.50. So I just generated $110.20. How ridiculously, hideously badass!