Actually it is not a wing but a Qualification Badge but that is used to help people find it on eBay. This is a museum quality reproduction of the famous WWII Navy Submarine wing badge in sterling silver with 24k plated surface. It has a pin back just as the original badge and is hallmarked SS224. This is a very nice version of the submarine badge. The SS224 on the back means the man qualified aboard the USS Cod SN 224. The USS Cod is on display in Cleveland Ohio. Only about 1 in 100 qualify to be on a sub.