For sale is a. Vintage Frontier Gas & Oil advertising license plate topper. Ann’s Cafe in Wiggins, Colorado. This rare and eye-catching piece of roadside Americana combines bold. With local business promotion, making it a standout collectible for gas and oil enthusiasts or Colorado history buffs. The topper is made of metal and designed to mount above a license plate, as was common in mid-20th century promotional advertising. It shows some wear, surface scratches, and light patina consistent with age, but retains strong color and readable graphics. A great addition to any collection of vintage gas station memorabilia, license plate toppers, or regional advertising.