Porcelain Sign Research Resources Intro to CollectingLearn about vintage sign materials, the current market, thinking like a collector, and where to buy and sell vintage signs. History of Porcelain SignsLearn when and why porcelain signs became so popular with advertisers and then collectors. Determining ValueLearn about the factors that DO and DON’T determine the value of a collectible sign and see some examples of low, mid, and high-end signs. Determining AuthenticityLearn how to tell the difference between an authentic original vintage sign and a fake or a reproduction. Frequently Asked QuestionsSome of the common and interesting questions Dale has encountered when being interviewed about his collection and purchasing of porcelain signs.