Vintage pair of optometry testing eyeglasses with curved lenses, engraved with TM300. The glasses have a leather wrap across the bridge. The frames and glass lenses are curved outward. The glasses are in good vintage condition with some wear, there are some slight nicks around the lenses. Diameter of the lenses: 1-1/2". Width (temple to temple): 5". Weight: 38.4 grams.