"Pilots, Man Your Planes!"   
                                         WWII U.S. Naval Aviation Collector's Guide                                                                              
Major Gregory Boyington, U.S.M.C., is seen here with a rather "salty" pare of A.O. goggles atop his equally "salty" H.L.B. M-450 summer flight helmet. The warm, moist tropical air and long hours in the cockpit have begun to take their toll on his eye protection equipment. Areas of corrosion and pitting are clearly seen on the plated frames of his goggles, the rubber face cushions  appear to have begun to glaze-over on the surface and the headband elastic looks a bit worse-for-wear as well. The sweat of his brow has darkened the front of his flight helmet and would also be having it's affect on the inside surface of the goggle's cushions, which in this case, have no chamois pads. 

It is our opinion that a pair of AN-6530s, when found in less than pristine condition, can still enjoy a proud place in one's collection, without the need of restoration, if they have not deteriorated beyond the point where they would no longer have served their intended function for the original user. We submit this photo as "Exhibit A", to help prove our case!
AN-6530 Goggles