...pretty sure that's not a Pure sign - Pure signs are 10" x 12"...
...I have seen similar signs with other Octane ratings, in red...someone on eBay had a pile of those last year, or the year before...
I bought it from a man in Mass. that had it for a long time. So it didn't come out of some stock that was on ebay last year. He told me it was Pure that's why I listed it.
If you're going to post a doubt here on my ad, then please at least be "for sure" about them not being Pure or maybe someone else can chime in and tell us what Gas company they were from or......