If you are on FB, there is a group called Vintage sign authentication. You might put it up there for review also?
I've never heard of a 2 footer and the green looks wrong to me but I'm no Flying A expert!

LOOKING-4:WELDING SIGNS,Charter/Finance/PulOil/Trulite/TruTest-Oils,True's gas CORALINE/RAINBOW, Gardner 70 items of Yakima wa., Wa/Or/Id Chief items