On where you live can't give a great answer unless we know. I use my local cash for gold guy as well as my local flea market guy. You rarely will get it at spot so if you can afford it buy larger quantities. I will also use Apmex here is a link for you
Look at this on eBay:
90% Silver Coins - $100 Face Value Bag - 90 Percent Silver
Look to join your local coin club if there are any our club meets 2 times per month here in Massachusetts. Also if it is coming to your town the silver circle movie attend that as well and you could make a bunch of contacts there. Good luck in your search.
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