Gulf Oil Collectors Series Limited Edition Tumbler

This is a vintage 1980s Gulf Oil Company Collectors Series Limited Edition glass tumbler that measures 4 inches tall and 3 and 1/8 inches in diameter. It features and lovely scene of a 1940s to 1950s Gulf service station and car, and says " The Dawning of a New Era". I believe it is made by Luminarc, but it is unmarked. It is in excellent used cond. No chips, no cracks, and no wear to the enameled design that I can see.