The product is a 1961 Proof Silver Washington Quarter, minted by the U.S. Mint in Philadelphia. It is a 90% silver coin with a fineness of 0.900, graded as PR 66 by PCGS. This highly sought-after coin is a valuable addition to any coin collection, showcasing a polished and pristine surface that reflects its proof strike type. The certification from PCGS ensures its authenticity and quality, making it a desirable piece for collectors and investors alike.