Question About Numismatic Premium

Precious metals and numismatics are two different markets. The values in each are determined by the intersection of the supply and demand curves in each. When the precious metals value exceeds the numismatics value, the numismatics value will reflect that higher precious metals value. Otherwise, the numismatics value will remain unaffected.

As a general rule all Silver coins are now being melted for their Silver content. Those doing the selling of those coins, those doing the melting, just don't care about a thing called a date or mint mark. A coin is a coin is just Silver to those individuals.
Very few sit down and compare the Numismatic value compared to Silver value. They are just metal to those.
The same for Copper. People are actually having pales of Copper coins sold for the Copper weight alone. Again, no one is sitting down and looking at dates.
You must realize that coin collectors are a real minority in this or any country. With over 300,000,000 people in the USA, only a fraction of those even know what a Mint mark on a coin means. Few ever look look at the reverses either. Actually that is similar to coin collectors too. Ever wonder why so many error coins are on the fronts? Even coin collectors don't look at the reverses much.