My favorite way to find free silver is with a metal detector. That might not actually qualify for finding "free silver", since a metal detector costs money. Going to the bank and buying rolls of dimes and quarters is another way people increase their silver stacks. Even though your getting the silver for face value, there is an initial investmest involved.
First you have to know which coins are silver. In the United States all dimes, quarters, half dollars, and dollar coins where 90% silver up until 1964. A lesser known fact is that from 1942-1945 the "war nickel" was 35% silver.
Half dollars are an often overlooked source of silver as well. From 1965-1969 all half dollars in the U.S.A. were 40% silver.
So now you know what to look for I'm going to tell you the best spot for absolutely free silver. Next time you are at the local grocery store check the reject tray in the coinstar machine. The silver coins are heavier than the modern clad coins. They get ejected into the tray below where you put your coins in. Sometimes I'll find interesting foreign coins as well. It takes some luck but if you peek in there you just might get yourself some free silver too. The dime pictured was my last coinstar score. Don't forget to upvote, resteem, and follow if you enjoyed the tips. Thanks