This item is a classic example of Dugan Glass production from the early 20th century, a period when the company was famous for its iridescent 'carnival' finish. The marigold color, achieved by spraying metallic salts onto the pressed glass while hot, was the most popular finish of the era. Collectors value these pieces for their iconic, light-catching ruffled edges and the distinct 'oil-slick' shimmer characteristic of the Dugan factory's output. While common in the market, they remain highly sought after by decorators and novice collectors for their vibrant aesthetic and historical connection to the American glass industry's 'carnival' boom. Value is heavily dependent on the vibrancy of the iridescence and the absence of chips on the delicate scalloped rims.