By The Chas. Fischer Spring Co., Brooklyn, New York. Excellent frames with only light wear to the plating. These have the more streamlined vents and are stamped 'AN6530' on the centre hinge. Fitted with an excellent set of clear American Optical glass lenses. Two-piece sponge rubber face cushions were fitted to early examples of the AN6530. These are in excellent/supple condition but we consider them to be reproductions. The strap is worn, stretched and lacks elasticity. Stock code G23309.