Will the mint produce a 5 oz silver coin? I have heard of it for a while and the mint's websight shows "to be announced" in their production schedule. I tried to start the presidentail spouce series but was priced out of it by the gold market. It looks like this series (if ever produced) might be my next option for a new US issue but I think the fluxuating silver prices may curb this new coin. Any thoughts?