I was happy to find your site. I graduated from MACV Recondo School in 1968. I was with the 101st (ABN) 3/506th E company (LRRP)
(866) 622-8764
WWI Pilot Wing 2 1/4 inches wide, which would indicate a shirt or sweetheart wing. This museum quality reproduction is in sterling silver with the letters US 24k gold plated. It looks like this wing may have been originally made in Europe due to the little points on the top side. Whereas most US designs had a smooth top surface.