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Osram L40W/30 Imp

Osram L40W/30 Imp

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Today I've found two of these Osram tubes in the recycle bin. They are NOS and seem quite old.
Anyone can decode the production date(A4r5)? It doesn't seem to be any of the osram standard datecode format.
They are unshielded.

40W_4300K.jpg OsramL40W30.jpg Cadillac.jpg IMG_2086.JPG

Light Information

Light Information

Manufacturer:Osram
Model Reference:L40W/30
Lamp
Lamp Type:T12
Electrical
Wattage:40
Voltage:120V
Current:0.43A
Optical
Color Temperature:2900k

File information

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Filename:OsramL40W30.jpg
Album name:Kappa7 / Linear Fluorescent
Keywords:Lamps
File Size:690 KB
Date added:Sep 21, 2019
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Date Time:2019:09:21 22:49:26
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Comments
monkeyface
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Sep 21, 2019 at 04:28 PM Author: monkeyface
Nice lamp!

The capital letter “A” suggest that it is a Thorn (Atlas) made tube. May some colleagues from Britain confirm that?
TL buis
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Sep 29, 2019 at 02:03 AM Author: TL buis
In my opinion it is indeen made by Thorn/Atlas, because of pins welding style and endcap it is not typical Osram
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