The 1935-S San Diego Commemorative NGC MS 66 is a valuable silver coin minted in San Francisco in 1935. This coin holds historical significance as a commemorative piece, celebrating a specific event or anniversary. Graded as MS 66 by NGC, it is in uncirculated condition, making it a highly sought-after coin among collectors. With a fineness of 0.9 and a denomination of 50 cents, this piece is a rare and prized addition to any coin collection.