The 1986-S Washington Quarter is a highly sought-after coin among collectors due to its special label "25C Proof" from NGC Superb Gem. This silver coin was minted in San Francisco and is a valuable addition to any collection of US coins. With a striking proof finish and a high grade from NGC, this coin is sure to be a standout piece for any numismatist looking to add a rare and pristine Washington Quarter to their portfolio.