Thread: Light bulb Identification.
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Old 10th Aug 2022, 12:47 pm   #1
Syrinx1
Pentode
 
Join Date: Feb 2018
Location: Nottingham, Nottinghamshire, UK.
Posts: 229
Default Light bulb Identification.
Hello,

Just wondering if anyone is able to Identify this old light bulb \i found among my stuff.

The only marking I can see are the numbers 403 on the base.


Thanks,

Jonathan.
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