I have a few silver coins, but i do not think any of them are Pure most are stirling standard which is ....good... I have a half dollar but I do not know what standard they used.
pure silver anything would be rare and over subject to wear.
what do I do with them? Nothing at all.......they just sit there getting slightly more valuable every day.
I have a Franklin half-dollar, it isn't 100% silver or anything, but it is a higher percentage than what they have nowadays. It's worth about $2.00 or so.