Found Coin near Marina Park, Seattle, United States

Found AA coin on the lawn approximately 15 feet from the picnic table under the trees in Marina Park. Photo shows a round silver-colored metal coin or medallion featuring a figure sitting in a meditative pose under trees with waves/water in the background. The text inscribed around the border of the coin reads "SERENITY IS NOT FREEDOM FROM THE STORM" at the top and "IT IS PEACE AMIDST THE STORM" at the bottom.