Trying to ID this for a friend. Very well may be after market but not sure. Says Jarvis 1/4 20 on bottom. I know Jarvis made radiator caps but can't find this one anywhere. He has had it for about 40 years.
The one you have pictured is nicer than this one; http://www.ebay.ca/itm/Original-Vin...ood-Ornament-Mascot-Antique-Car-/221401130218 Big bucks!