That's cool. Did you stay at the auction long enough to see what they went for?
I have an old can of Cenex motor oil that the previous owner of my house left behind. It is SF-SE-CC service ratings, so I'm assuming it must be a few years old. The tin lid is labeled Penzoil Z-7, so it appears it is Penzoil oil relabeled for Cenex. I've often wondered what value it has. Not that I want to sell it, as I think it will be cool to show to the grandkids. Let them see how motor oil used to be packaged.