The Antique Keystone "Paragon Scope" Stereoscope and 11 Viewer Cards from 1906 are a vintage piece of photographic history. This original stereoscopic set by Keystone View Co. features a wooden construction and glass viewer cards, providing a unique glimpse into the past through photographs. Perfect for collectors of vintage items or those interested in the art of photography, this stereoscope set offers a charming and nostalgic viewing experience.