These coins or commemoratives have most information on the photos. The Apollo xii is very light weight and I believe it is just a token coin. The Republic of Marshall Islands two coins are standard look, size and weight for those types of coins. The John Glenn has no identifiers I can see. It is 1.25" diameter. Don't know material, but could be silver as didn't react to my small magnet. Don't know if that is considered definitive or not. So, putting up at fixed price with offers considered.