Home / United States / World War II / Wings / WWII 3 Inch Pin Back Sterling Technical Observer Wing by N.S. Meyer WWII 3 Inch Pin Back Sterling Technical Observer Wing by N.S. Meyer$250.00 Very good condition, with uncleaned patina. The pin opens only to an angle of 45 degrees. WWII 3 Inch Pin Back Sterling Technical Observer Wing by N.S. Meyer quantity Add to cart Item Number: 72903 Category: Wings