Explore this unique collection of vintage optical and medical stereoview aids, featuring the Keystone No. 50 Home Training Stereoscope, renowned for its educational value and powerful image clarity. Accompanied by the Dvorine Animated Fusion Training Charts, essential for orthoptic training, alongside the American Optical Dr. Wells' Stereoscopic Charts and G.P. Guibor Stereoscopic Charts designed for both adults and children. Each item showcases minor signs of age, which only enhance the historical significance of these training tools. A must-have for collectors and professionals alike!