I found 1 similar to yours on Ebay for $5.00 link: https://www.ebay.com/itm/STS-7-1st-...=true&nordt=true&rt=nc&_trksid=p2047675.l2557 a completed auction.
That was a bronze coin. The one i have is pure silver and 156 out of 1000 with proof of authenticity. I have been looking for one like it there are 999 more that someone has had to sell. I purchased the coin new and have never found another one. Thanks for the link of the one you found.
Isn't the Charleston mint similar to like the Franklin mint? No idea on this and not a lot of information. Worth at least melt and whatever anyone would want to pay for it beyond that to have it.
I have a package of M&N's that went up on one of the shuttles. Astronauts mother gave it to us. I think it is only worth melt.
It has a NASA mission/inventory tag on it. But, the tag, as applied at the time, did not state the mission number.
I edited my post because I thought you might have meant M&Ms and they melt in you mouth (so only worth their taste) and not in your hand. It would also be something that a mom would give you...
It is a package of about a dozen M&M's vacuum packed in a clear bag. I put it away somewhere in a jewelry box. I know the rules - no pics it didn't happen. I must dig it out.
Thanks for the attempt, i will toe tag it as melt for now and keep looking. Might have to write nasa and see if they have some information about it?