Unmarked Vintage Blue Optic Swirl Lowball Tumbler Glasses Set of 3 Rocks Whiskey Barware

Set of 3 vintage light blue optic swirl lowball/rocks glasses. Unmarked, but they resemble Libbey optic swirl glasses. Please review the photos and compare to your own pieces if trying to match a set. No chips or cracks. Light surface scratches and signs of normal use. See photos for details.