Vintage Double Sided Sinclair Aircraft Gas & Oil Porcelain Enamel Sign. The sign is in great Condition Minimum chips and scratches, The screw holes are fine on the sign, Great piece for the display. This item is in the category "Collectibles\Advertising\Gas & Oil\Merchandise & Memorabilia\Signs". The seller is "akrk9n" and is located in this country: IN. This item can be shipped worldwide.