This is an NOS Wolf’s Head Oil Rack Sign. It is single-sided, painted tin, and measures 21-3/4” x 9-1/2”.
The condition and colors are excellent. Any "lightness" in the green at the far right side is from the camera flash. Again, all color is just super. I purchased this sign from the storeroom of an old-time auto parts store in our town over 40 years ago.
The price is $415, plus the actual cost of shipping. Thanks for looking.