York County Commemorative Half Dollar 1936 MS 65 NGC Silver 50c Coin. A genuine 1936 York County Maine Tercentenary Commemorative Silver Half Dollar Coin, graded and certified MS 65 by NGC. This historic 90% silver half dollar commemorated the 300th anniversary of the founding of York County, Maine – the state’s first county. Designed by Walter H. Reich, both sides of the coin feature large, stylish lettering. The obverse depicts the Brown’s Garrison stockade, which became a town in 1636. United States of America and Half Dollar encircle the design in large, stylish letters. The reverse bears an adaptation of the York County seal. The images used for this listing are stock photos from our inventory.