Manfacturer: Yorkville Industries, Inc
The Yorkville "transparent black" light bulb as it says on the box, is not a blacklight bulb at all. The glass is actually more of a charcoal color, and you can easily see through the glass. I got this for real cheap at a light bulb supply store and it was the last one they had...and this is an interesting lamp to me...definitely a bulb just for fun or something.
Lamp: Decorative incandescent
Wattage: 25
Voltage: 130
Bulb: G-25
Finish: Charcoal colored glass
Base: E-26s Brass Medium Base
Class: C
Filament: C-9 w/ 3 supports
Lamp Life: 2000 hours
Manf. Date: Not known
Country of
Orgin: Made in Korea for export to USA