Kopp Glass Co. 5-3/8" Red Glass Railroad Lantern Lens-made for Teleoptic co.
Kopp Glass Railroad Lantern? LENS Cobalt Cobalt Blue Vintage
KOPP Glass Railroad Lantern Lens. Red
KOPP Glass Railroad Lantern Lens. Convex Green
KOPP Glass Railroad Lantern Lens. Blue
KOPP Glass Railroad Lantern Lens. Green