You will see the layering of porcelain enamel paint where paint chips exposed the different layers of porcelain enamel paint. Sign is not perfectly flat, does have very minor warping, but it will still display nicely on a wall. The item "VINTAGE LARGE 30 Diameter SINCLAIR OILS DOUBLE SIDED PORCELAIN ENAMEL SIGN" is in sale since Sunday, April 01, 2018. This item is in the category "Collectibles\Advertising\Gas & Oil\Other Gas & Oil Collectibles". The seller is "digger068" and is located in Naperville, Illinois.This item can be shipped to United States.