Pretty nice old car mirror, 4 5/8 across the front of the mirror, including the metal portion. The underside of the mount has Yankee 40138. I did not find any information on the upper part of the mirror. I don't know what vehicle this mirror is from. There is minor pitting on the metal finish. There is a visual defect on the side of the reflective glass. I am not sure what the correct term for this is. Please check out all of the photos for condition and possible fitment. This mirror is being sold as is, no returns, no refunds.