I would've guessed from the photo Ed posted in the "great old pics" thread yesterday that the Oilzum signs would've been cardboard or paper, as it was one I was not familiar with. Neat to see the one sold today and that they were tin tackers. Regardless of what they were made of they are a cool looking sign!
Darin

Darin Sheffer
Always looking for Mobil and Marathon items I don't already have!