These are the folding type, and come in their labeled case. Temple wires still has leather cover and are bent maybe to fit previous owner. Inside felt lining has soldier's name. Bottom of case has rust blemishes.
D-1 flying goggle assembly, standardized on 13 August 1935, was actually a pair of sun glasses with a rigid frame and plastic insulated arms. It was superseded by the more comfortable flying sun glasses (comfort cable) in November 1941. The item "ANTIQUE AMERICAN OPTICAL AO AVIATOR GLASSES WWII US ARMY AIR CORPS D1 GREEN RARE" is in sale since Saturday, April 27, 2019. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment". The seller is "flip4real" and is located in Chicago, Illinois.This item can be shipped to United States, Canada, Bahamas, Uruguay.