Battle Of Antietam Commemorative Half Dollar 1936 MS 65 PCGS SKU:I9732. A genuine 1936 Battle Of Antietam Anniversary Commemorative Silver Half Dollar Coin, graded and certified MS 65 by PCGS. This 90% silver commemorative half dollar was struck to commemorate the 75th anniversary of the Civil War Battle of Antietam. The obverse bears two left-facing portraits. The first is of Confederate General Robert E. The second is of Union General George B. McClellan, who stopped Lee’s march into Maryland. The reverse depicts Burnside Bridge – where Maj. General Ambrose Burnside and his Union troops won a hard-fought battle to cross Antietam Creek. The images you see are for the exact item you will receive.