This vintage ISO=VIS Anti-Sludge “D” Motor Oil Porcelain Sign is a rare find for collectors of gas and oil memorabilia. The sign features a multi-color design and is an original piece, perfect for adding a touch of authenticity to any collection. The sign is made of high-quality porcelain and has an ISO=VIS design, making it a unique and eye-catching addition to any man cave or garage. This item is perfect for those who appreciate vintage advertising and gas & oil history. This is a used vintage item in good condition. This item has some rust mostly around the edges, holes, discoloration, fading, scratches, scuffs, missing paint, and small dings and dents. Please see all of the photos and use the zoom in option for the best description of this item.