For large orders, major online retailers often have "deals" sections where junk silver is sold at low premiums. Where to Buy Junk Silver | Hero Bullion

: Dimes, quarters, and halves dated 1964 or earlier. 40% Silver : Kennedy half-dollars dated 1965–1970.

: "War Nickels" (1942–1945) with a large mint mark above the dome on the back. 2. Peer-to-Peer Marketplaces