{"product_id":"1964-u-s-mint-proof-set","title":"1964 U.S. Mint Proof Set","description":"\u003cp\u003e\u003cspan\u003eThe 1964 Proof set offers a unique chance to own a piece of history, and it stands out for several reasons. First, it marks the final year the U.S. Mint produced 90% silver dimes, quarters and half dollars for circulation. Beginning in 1965, those coins were made from a copper-nickel cladding. The 1964 coin Proof set was also the last produced until 1968, as Proof Sets were replaced by \"Special Mint Sets\" from 1965-1967. Finally, 1964 Mint Proof sets were the first to include the new Kennedy half dollar, introduced the year after President John F. Kennedy's assassination in 1963.\u003c\/span\u003e\u003c\/p\u003e","brand":"GM Coins Treasures \u0026 Co","offers":[{"title":"Default Title","offer_id":46812147679421,"sku":"PS1964","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/9568\/9661\/files\/1964proofset.png?v=1779339665","url":"https:\/\/gmcoinshunter.com\/products\/1964-u-s-mint-proof-set","provider":"GM Coins Hunter","version":"1.0","type":"link"}