This glass lens, embossed with "VIOLET-RAY LENS 8 3/8 MADE IN U.S.A. PAT. NOV. 4, 1919 NO. 54158," features a V-Design pattern and was patented on November 4, 1919, under patent number 54158. The embossed markings are fully legible, and the lens features a ribbed V-Design pattern, which is intact and functional for its intended purpose.