CIRCA1947-1952, U.S.A.F. TRANISTIONAL ENLISTED U.S. COLLAR DISCS, SILVER, GILT Two examples, silver and gilt. Circled collar insignias for Enlisted personnel were introduced in 1918 when the United States Army Air Service first proposed collar devices. The tradition of Enlisted Airmen wearing collar insignia with a circle around the device continued for over seven decades until 1991, when the decision was made to eliminate collar insignia for all ranks as part of a major uniform overhaul. That edict was partially overturned in 1995 with the announcement that both Officers and Enlisted personnel would once again wear U.S. lapel insignia with no circle. International Buyers Please Note: We do not ship outside of the United States! No Exceptions. In addition, we will not ship to third party shippers or any other international shipping hubs such as International Shipping (EIS), EIS 110 INTERNATIONALE BLVD, GLENDALE HEIGHTS IL 60139-2080, or ACI Express Shipping. No buying agents such as Intercommerce America. No international buyers, no freight forwarding companies, no gift addresses, no non U.S. citizen buyers, and no non U.S. based forms of payment. If you place a bid, or make a purchase, we will cancel your bid, and or cancel your purchase! If you wish to make a purchase, you will have to find someone located within the United States to make the purchase for you. They would be responsible to send the package to you. We do ship to APO and FPO addresses.