I agree that collectors that hold on to high grade, common date PM coins will see the numismatic value rise. All those coins being melted increases the rarity of those left behind … how much is impossible to predict. The big melt will make the already inflated population reports of grading services even more inflated. Doubt few, if any, of coins cracked out for melting have their cert. nos. reported to the relevant TPG service. Mike
In the long run this will happen if the price remains high. In the short run What gets sent to the refiners is very random so large numbers of chBU '64-D quarters will survive for a very long time. There may be some interesting exceptions.