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How old

How old

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Never noticed this before, this has 2 etches one on the bulb and one on the cap. The Philips mark is a single ring not the shield as used now. Made in Gt Britain 220v 40w and code is 46 single coil. On the cap Made in Gt Britain Philips 220v 40w I have never seen this double etch on the same lamp?

P1070491_28229.JPG P1070487_28229.JPG P1070485_28229.JPG P1070481_28229.JPG

Light Information

Light Information

Manufacturer:Philips
Lamp
Lamp Type:Incandescent
Filament/Radiator Type:Single Coil
Base:BC
Shape/Finish:Pear shape orange
Service Life:? 1000hrs
Electrical
Wattage:40w
Voltage:220v
Current:0.18a
Physical/Production
Dimensions:4.5 x 2.25 inch
Factory Location:England
Fabrication Date:Code 46
Application/Use:Decorative

File information

File information

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Filename:P1070485_28229.JPG
Album name:migette1 / Migette1
Keywords:Lamps
File Size:250 KB
Date added:Dec 23, 2019
Dimensions:2464 x 1339 pixels
Displayed:33 times
Date Time:2019:12:23 17:27:24
DateTime Original:2019:12:23 17:31:03
Exposure Bias:0 EV
Exposure Time:1/40 sec
FNumber:f 3.7
Flash:No Flash
Focal length:15 mm
ISO:3200
Make:Panasonic
Model:DMC-GX8
Software:Windows Photo Editor 10.0.10011.16384
White Balance:0
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-169806
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Jovan
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Dec 23, 2019 at 02:54 PM Author: Jovan
I think this bulb is from 1946.
Keiron
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Dec 26, 2019 at 06:54 PM Author: Keiron
This looks to me like an early fire glow lamp?

Mazda lamps stay brighter longer :-)

migette1
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Peter


migette1
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Jan 06, 2020 at 06:03 AM Author: migette1
Thanks to you both.

Interested in the history of electric lighting and incandescent in particular and neon glow lamps.

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