Good job! Thats probably it. I've been looking at images of hubcaps all day and never thought about Plymouth. I gooled Plymouth and found a couple of pictures on caps with "Plymouth" under the sails. These do not have the Plymouth name under the 'sails', but the sails are the same. Thats odd that my dad had them since all he ever restored were Fords. Now I have to find the year. Thanks!