Blue - ( 1 left ).
Vintage Kopp Glass ~ Amber Glass Lens 4 1/2" L 3 F ~ Lamp Lantern Signal ~ NOS
2 Vintage Kopp Glass ~ Blue Glass Lens 4 1/2" L 3 F ~ Lamp Lantern Signal ~ NOS
Vintage. KOPP Glass Railroad Lantern Lens. Blue. Railway. Train.
Vintage Kopp Glass Clear Signal Lens 5 3/8 DIA RDL Railroad Industrial
Vintage Kopp Glass Blue Signal Lens 5 3/8 Inch Diameter RDL Industrial Lighting
Vintage Kopp Glass Flat 4 3/4” Railroad Lantern Traffic Light Signal Lens Red
