Picked up this coin and am having trouble finding I formation on it. I have found the bronze version but nothing about the silver limited edition
Agreed it does look cool. After an internet search the only STS-7 Medallion in silver I could find looks like this. Yours is always described as STS-7 Bronze medallion.
It's a privately issued Silver bullion medal. It's not from US Mint But the Charleston Mint. Usually these are only worth bullion value unless somebody finds it interesting