How much is an old porcelain advertising sign worth?

Porcelain enamel signs from the early and middle 1900s are popular, especially those for oil and gas companies, soft drinks, tobacco, farm equipment, seed and automotive products. Value depends on the brand, the graphics, the size, the colors and condition. Signs with bright colors, strong graphics and logos collectors recognize tend to bring the most, while common or plain signs bring less.

Condition matters a lot: chips, especially in the center of the sign, faded colors, rust and bent edges reduce value. Chips around mounting holes and edges are more accepted. Restoration should be disclosed and generally lowers value compared to original condition.

Because the market is full of reproductions and fakes, be careful. Compare your sign with known examples, and look at completed sales for authentic signs in similar condition. For a valuable sign, an auction company or appraiser that specializes in advertising can examine it in person and tell you whether it is genuine.