I saw one at Iowa Gas last year with that makers mark. It wasn't as heavy as the ones I have here and none of mine have that makers mark.
Also all my wide body blue ones have 6 mounting studs and the backs on both the blue and yellow ones are white porcelain.
Different manufacturer.... maybe but no one has proved that to me yet!
He has another one that looks right (not a 190) and he seems to sell correct stuff.
maybe someone else has information on these with the makers mark!
Edited by Mike M. (Sat Jun 06 2015 10:31 AM)
Always Looking for any Pure Oil and Sunoco Items.