Other than checking the Mint website, I know of no other site that lists all of the future mintage limits. Most of the yearly Mint issues have no limits and are pretty much minted to demand. Special one year issues and issues such as the yearly commemorative coins and first spouse coins do have limited mintages which are determined on a yearly basis and announced on the mint's website shortly before they are released.
If we knew what coins were going to be valuable in the future due to low mintages, we would all be rich. Right now, aside from special one year only issues, the First Spouse gold coins, the 5oz ATB coins and the more affordable U.S. Marshalls/March of Dimes commemorative coins appear to be the coins with the lowest mintages this year.
If we knew what coins were going to be valuable in the future due to low mintages, we would all be rich. Right now, aside from special one year only issues, the First Spouse gold coins, the 5oz ATB coins and the more affordable U.S. Marshalls/March of Dimes commemorative coins appear to be the coins with the lowest mintages this year.