Antique 1930s - 40s Nearing 100 years old! These will clamp over a standard-traditional size incandescent bulb (or LEDs that come in the same format). 4.25 W at top.
9.5 W at bottom. Rare Survivor - lots of crinkle crease-marks, but no cracks or holes... Doubtful if we ever find another one like it.The patina, the stories, its history... All are part of the attraction if you ask me.