This is a rare find. This lot contains an Airforce Ground Observer Corps pin. There have been 2 Ground Observer Corps in the U.S. history. The first Ground Observer Corps was a World War II Civil Defense program of the United States Army Air Forces to protect United States territory against air attack.

This pin is from the second Ground Observer Corps.

The second Ground Observer Corps was organized in early 1950, during the Cold War. Operating as an arm of the United States Air Force Civil Defense service, the second GOC supplemented the Lashup Radar Network and the Permanent System radar stations. Observations were telephoned directly to filter centers and the information was in turn relayed to Air Defense Command ground control interception centers. By 1952 the GOC program was expanded into Operation Skywatch, consisting of 750,000 volunteers aged 7 to 86 years old working in shifts at over 16,000 posts and 73 filter centers. The second GOC program ended in 1958 with the advent of automated Army (Missile Master) and Air Force (SAGE) radar systems. GOC volunteers were encouraged to continue their service in the Radio Amateur Civil Emergency Service (RACES).