By Bausch & Lomb Optical Co. Specification No. AN-DD-L-236. Clear coloured glass lenses in the original tissue wrapping paper and paper envelope. These will also fit the earlier B-6 and B-7 goggles in addition to some of the commercially manufactured American flying goggles from the 1930s. Unused. Wrappings are aged/torn but lenses are excellent.. Stock code G19301.