This is an original Guide Glare Proof dimmable, yellow-glass mirror, as fitted to Chevrolet, Buick, and other GM vehicles in the late 1940's to early 1950's. It is in very good condition. There are some marks in the glass (as per the photos), but is still usable as-is. The chrome is very good, the dimming feature still works as-new, and the swivel joint is fully-functional and tight. Similar mirrors are on Ebay for $150USD or more. Looking for offers on $115