Vintage SSP CO-OP Gas Neon Skin Gas & Oil Porcelain Enamel Sign. Hear is a great condition used and great shape Vintage SSP CO-OP Neon Skin Gas & Oil Porcelain Enamel Sign. Minor Rust, chips, stains, scratches and some dents. Great for your garage, pool room, bar, barn, or shop. The screw holes are fine on the sign…. Very very rare on its own. A great scarce sign for your display or collection, Any defects not mentioned but visible in the photos will be considered as described. See the pictures for better understanding.