A fine original WWII US American Defense Service medal here, complete with ribbon bar and lapel pin. This American Defense medal is an original WWII era example with period-correct sewn on pinback. Any wear is visible in photos. 
 
The American Defense Service Medal was a military award of the United States Armed Forces, established by Executive Order 8808, by President Franklin D. Roosevelt, on June 28, 1941. The medal was intended to recognize those military service members who had served on active duty between September 8, 1939, and December 7, 1941.