The Antique Cobalt Blue Pince Nez Sun Glass is a rare and unique piece from the pre-1930 era, making it a valuable and sought-after item for collectors of optical and antique artifacts. The pince nez design, featuring a cobalt blue tint, suggests its use as a sunglasses or eyeglasses accessory, reflecting the fashionable and practical designs of the time. With its historical significance and distinctive colors, this vintage piece is sure to stand out in any collection of pre-1930 optical memorabilia. excellent condition. 4 " across, lens 1" high.