As for monetizing every year’s issue, yes this must be done and is done when the mint director orders production of new coinage and they are offically entered into the books. Go into any US redbook and you will see the exact number of coins that were made every year. The 1933 Double Eagle shows 445,500 but they were not released for circulation. I really don’t know how to explain this any different.
As for the numismatic value, these coins can be marketed for collectors, but it would be illegal and that is why it is hard to price them. Same thing for stollen art and artifacts like Papal Holy Releics, they have no real value because they are not suppose to be sold. If that is true for the coins, even the gold content does not matter as it is stollen property.
Who’s gold was used to mint the coins?