#9061 - Gas Station Roadside Billboard. This is our 7th gas station sign. Pennzoil was founded in Los Angeles, California in 1913. In 1955, it was acquired by the Oil City, Pennsylvania company South Penn Oil, a former branch of Standard Oil. In 1963, South Penn Oil merged with Zapata Petroleum; the merged company took the Pennzoil name. Comes with supports. #9061 - Pennzoil Billboard Size 4.85" W x 7.4" T Suitable for HO/O scales