The 1963 + 1964 US Mint Silver Proof Set is a highly sought-after collection featuring .61 oz of silver coins in pristine proof condition. This set includes coins from the United States Mint, making it a valuable addition to any coin collector's portfolio. The set showcases coins from the years 1963 and 1964, making it a limited edition piece for numismatists looking to add rare and unique coins to their collection.