How worn was the coin? Most of the silver I found years ago was well worn, poor to fair condition. I had a stack of buffalo nickles sorted from the rest that you couldn't even read the dates. It would be a wonderful day to find silver that was in very good to fine condition in circulation.
It was fully in the "junk silver" category.
I have a lot of coins in that category. I never bought a bag of old silver coins but it would be tempting just to see if I could plug a few more holes in my coin collector books ... that I have done little with over the last ~50 years.
Anything in particular you're looking for? I was left all of the junk silver my grandparents had, if there's a coin or two there I can send to a collection I'd be happy to pass it along.