The Bausch & Lomb B & L 15x W.F. Stereo Eyepiece 31-05-68 is a vintage lens made by the renowned brand Bausch & Lomb in the United States. This stereo eyepiece is designed for photography and movie purposes, offering a magnification of 15x for precise and detailed images. With its high-quality construction and historical significance in the world of vintage lenses, this product is a valuable find for collectors and optics enthusiasts alike.