All Chrome Oblong measurements outside 9-3/8" dia. wide x 10" dia. high - back side Inside diameter 7-3/8" 1-3/4" deep at the bottom. 3-1/4" deep at the top One locking bolt hole on the bottom There are no manufacturer stampings or markings on the inside! I have gone thru hundreds of photos & attended many car shows and have not found the exact match. I have found some close but not exact.