DX Motor Oil Sign Antique sign for DX Motor Oil. Sign is porcelain and single sided. Measures 30" by 20". I would guess this to be from the 30's or 40's. This a scarce version of this sign. It has porcelain loss as can be seen in the pictures and is not completely straight. This sign was dug from a closed landfill in Southern MO. This will look fantastic in any collection or in your shop. EnArCo / White Rose sign is available in another listing. Check out my other listings and visit us at . Thanks for supporting a family owned business!