This is an antique American art glass paperweight, likely dating to the late 19th or early 20th century. The piece is constructed with a clear glass dome over a multicolored scramble or end-of-day base, featuring various crushed glass frit in shades of red, blue, yellow, green, and white. The commemorative and promotional text is rendered in a white enamel or ceramic paste and is encased within the glass. The internal inscription reads: COMPLIMENTS / OF / GUS KELLER / BURLINGTON, IOWA. The word OF is flanked by decorative scrolls. This style of personalized paperweight was a popular form of advertising and gift-ware produced by various American glasshouses during the Victorian and Edwardian eras.