AO American Optical Sunglasses Vintage Gold Frame Green Lens Aviator Style. Previously pilot owned/used.  NOTE: the lens are the shutter style with a lighter stripe color across the center lens, darker top and bottom lens.  These are not bifocals, have NO correction for eyesight, they are regular sunglasses with varigated lenses.  

The American Optical is the original inventor/developer of the aviator glasses with Bausch and Lomb, later produced by Ray Ban.  The leather case they came is has a light worn Ray Ban name with hard plastic green inner liner.  I'm including the case they came in as it is very secure but the glasses are NOT Ray Bans, the AO logo shows on one of the photos, no names etched on lens.

Questions?  Please feel free to ask.