If you want to make your hunt even more difficult, you can start to look for the even harder to find Canadian bottle which has Shell Oil Company of British Columbia Limited at the bottom. Happy hunting! Cheers, Don.
...hold out for one of these, and swap out the caps...you'll find one...
Looking for better Gulf items: signs, globes, cans and paper - especially porcelain Gulf flanges, and Gulf A-38 & A-62 ad glass...