The rust is recent. That's all I needed to see.
Do a search on ebay for that sign and I'm sure there are many! Good Luck and check here b4 you buy to save $Thousands$!

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