2011-S Vicksburg Mississippi 90% Silver Proof Quarter from the America the Beautiful series of coins. This coin has a denomination of 25 cents and is composed of 90% silver with a fineness of 0.9. It was minted in San Francisco and features the Vicksburg variety. This uncirculated coin is ungraded and uncertified, making it a desirable addition to any coin collection for those interested in US quarters and the America the Beautiful series.