I used dish soap and sponge to get rid of old dust and grime. It has paint chips on pretty much around the entire outer edge and both front and back sides. You will see the layering of porcelain enamel paint where paint chips exposed the different layers of porcelain enamel. 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 Monday, March 12, 2018. This item is in the category "Collectibles\Advertising\Gas & Oil\Merchandise & Memorabilia\Signs". The seller is "digger068" and is located in Naperville, Illinois. This item can be shipped to United States.