According to the Guide to Gasoline Logos by Wayne Henderson & Scott Benjamin Super Par was originally owned by the Central West Oil Co. of South Bend, IN. Later owned by W. H. Barber of Minneapolis, MN, later bought out by Pure. The guide lists the date of your sign from the 1950's to 1970.
Also, Welcome to Oldgas, I just noticed this was your first post!
Last edited by SandPCollector; Sat Jun 16 2018 04:41 PM. Reason: Added Welcome