A few months back, I saw a very nice cloth Mobilgas banner auctioned on Ebay for around $350 I believe. It seems the banner art has now been used to create an "antique vintage old-style sign", Ebay item number 263093039875
It bugs me that people are doing this, but I would guess the current Mobil Corporation doesn't really enforce trademark rights and shut these junk sign producers down. "Old Style" seems to be a recent Ebay catch phrase for new junk signs......

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