I have a bulb used during black out drills that was common in WWII. This working bulb has a flat black finish except for a little yellow window on the bottom where a faint yellow glow is emitted. I don't think this bulb was ever used as it still has the label on it( Wabash Black Out Unit, Brooklyn). Can anyone "shed some light" on it's value or rarity?
I could send a pic if you like!
Thanks,
tradio