Green and Blue 888s

[gtpts27]

Picked these up from Gary Cahill. Paid a premium but his stuff always in tip-top shape and I have a soft spot for rare colors of popular lights. Didn't know green 888s even existed but they were used on some Chicago Civil Defense units. Only wish green was as deep as blue.

 

[Mars Light]

Very nice. Blue looks like European blue.

 

[gtpts27]

Yes. It's a dark, deep, rich blue. Probably cuts down on effectiveness of light/brightness but looks great.

 

[jph2]

Those lights are very cool! Nice to see the blue and green for a change.

 

[Maxim2Eng]

Yes. It's a dark, deep, rich blue. Probably cuts down on effectiveness of light/brightness but looks great.

If the lens is glass, most of the candlepower of the bulb will pass through. Plastic lenses restrict more cp (red as much as 85%--thus the impetus of Unity's Spitfire lenses).

More fun facts on active color ID: The deep blue--cobalt blue--(cobalt is added to molten glass to achieve the color) is more visible to the eye but harder to judge distance. In plastic, it washes out in daylight. (FedSig changed the later series of blue TwinSonic domes to a blue-green hue to combat daytime washout.) Red is easier for the eye to judge distance, but looses cp significantly. That's why it's common the see red/blue combinations on lighbars. In the 70s, passive color research (color reflected back to the eye from an active source) gave us "Lime Yellow" firetrucks as more light was reflected back to the eye. At night, especially, red appeared almost black and white not much better.

BUT, LEDs and 3M Scotchlite have effectively rendered all of this as moot and "Vintage & Collectible".

 

[gtpts27]

If the lens is glass, most of the candlepower of the bulb will pass through. Plastic lenses restrict more cp (red as much as 85%--thus the impetus of Unity's Spitfire lenses).

More fun facts on active color ID: The deep blue--cobalt blue--(cobalt is added to molten glass to achieve the color) is more visible to the eye but harder to judge distance. In plastic, it washes out in daylight. (FedSig changed the later series of blue TwinSonic domes to a blue-green hue to combat daytime washout.) Red is easier for the eye to judge distance, but looses cp significantly. That's why it's common the see red/blue combinations on lighbars. In the 70s, passive color research (color reflected back to the eye from an active source) gave us "Lime Yellow" firetrucks as more light was reflected back to the eye. At night, especially, red appeared almost black and white not much better.

BUT, LEDs and 3M Scotchlite have effectively rendered all of this as moot and "Vintage & Collectible".

Thanks for the info. Didn't realize any of that.