By American Optical (AO). Good frames with only light wear to the plating. These have the less common 'tube' vents. Stamped 'A-N6530' on the centre hinge. Fitted with an excellent set of AO marked green glass lenses. These goggles are early production models with twin rubber cushions in place of the more common one-piece cushion. These are cracking and have stiffened but remain in good shape and the chamois backing is very clean. The strap elastic appears to have been replaced but the metal connector clips are original. A mid-range pair of these early variant 6530s. Stock code G22783.