I was at a local coin store and got to talking with the owner about why I save pre-82 cents and Canadian pre-82 nickels. He said that there was a guy who came in and bought all his Canadian coins and paper money to take to Canada and spend. I said I'd give him 6 cents a piece on all the old nickels and he sorted them out for me! 116 .999s including two old kings, six kings, three rabbits, and a few BU coins.
Moral of the story - it never hurts to ask!
And he that hath lyberte ought to kepe hit wel / For nothyng is better than lyberte / For lyberte shold not be wel sold for alle the gold and syluer of all the world. -Caxton's edition of Aesop's Fables, 1484