This is an exquisite, antiQue Blue Victorian art glass "threaded" finger bowl with a charming wavy, ruffled rim, circa 1890. This dainty, finely threaded glass is the most Divine shade of blue, and the additional vertical ribbing adds a delicate texture and depth - giving this art glass bowl a Lovely shimmer! Unsure of the maker - could be English, or possibly Boston & Sandwich. ( Very similar threaded glass items appear in old Boston & Sandwich ads) It does glow a nice yellow green under uv blacklight which indicates that it is quite old! Measures 3 inches high X 5 inches at the widest point across the ruffled rim. In Excellent condition! This Exceptional Victorian art glass bowl is Quite an elegant piece for use or display!