Numismatics, Coin Collecting, Coinage Values, & Currency discussion

Although I am fond of quarters, I have heard coin roll hunters mention they have an easier time finding 90% silver in the half dollar rolls. Someone else said nickles but there was only 35% silver in nickles for a few years (mid 1940s?) so that doesn't make sense to me. You think you would have an easier time with finding pre-65 dimes than nickles. Love them Mercs!