Very odd German dust goggles. The construction and materials are typical for WWII but these have a very unusual ventilation feature that I have not seen before. There is a strange offset ventilation gap in the construction with little beads for spacing. Someone certainly found a way to make one of the simplest designs significantly more convoluted. Most are still wrapped in paper but some are loose. The paper wrapping is in poor condition with many tears. Some of the metal hardware has rust on it. The straps are typical for WWII with minimal elastic. Price is for one.