I just wonder why we allow the u.s. mint people to keep and then sell later like 40yrs or so them for big$$$$$

Answer 1

Since this is a 'money making' enterprise, I don't have a problem with it. I would be concerned if they were selling at a loss. Coin collectors would have a gripe if they released old product below the market. They did this 30 years ago with CC silver coins.