I'm no expert, but that looks like a sign that was cut and placed into an existing can from a different sign altogether (re-purposed), due to the odd shape.

Maybe a Mobil expert will chime in to help you.

Edited by Speedracer (Wed Oct 18 2017 05:46 AM)
Currently looking for a WHITE STAR Staroleum or Staroline sign, a FILMOIL sign and a Wayne 866. Send a PM. Thanks.