What would the value be on this. Approx. 5ft x 2ft single sided. No date Just says property on Goodyear on back. Porcelain with some chipping on edges. Sign is very nice and shiny. Was in barn for 40 years
The sign was a popular one, early versions have a solid wingfoot while later have the outline wingfoot like yours.
The prices vary, the earlier get about 25-30% more as they are more eye appealing.
I've sold roached versions for $150 and nicer versions for $375. Premium condition will bring around $500 for 1 out of 20 buyers. Put it at auction and you'll get a little more but pay more out of pocket to auctioneer than a private sale.