Apollo Commems Required for Modern or 21st Century Type Sets????
Which of the new Apollo coins, if any, will be added to the required set composition of Modern Type Set, Modern Proof Type Set, 21st Century Type Set, and 21st Century Proof Type Set? I know none of the Baseball coins from a few years ago are required for any of these four Type Sets. Thanks.
My collecting “Pride & Joy” is my PCGS Registry Dansco 7070 Set: