Vintage 1940’s US Navy 10K Gold Lapel Pins

Great set of WWII United States Navy Lapel Pins - Two U.S.N. ROTC anchor pins, one stamped 1/20 10K with two clasp backs, appx 1”, other has bar clasp and stamped AE and CO, gold content unknown - One Navy anchor pin, stamped sterling (outer gold content unknown) one clasp back as other post is missing, appx 0.75” - Great vintage condition, WWII collectibles and military history Tag World War 2 World WarII