Beautifully engraved SPECIMEN certificate from the Rio Grande Valley Gas Company. This historic document was printed by the American Banknote Company in 1927 and has an ornate border around it. In September 1993, Southern Union Company acquired the Rio Grande Valley Gas Company ("Rio Grande") for approximately $30,500,000 (the "Rio Grande Acquisition"). Rio Grande currently serves approximately 75,000 customers in the south Texas counties of Willacy, Cameron and Hidalgo which includes 32 towns and cities along the Mexico border, including Harlingen, McAllen and Brownsville (the southernmost city in the continental U.S.).