Identification of detonators

[Athomix]

Hi,
I need to identify the folowing detonator.
Has someone already seen one of them?
There's no inscription except a serial number.
The guy who gave me told me that it was from german officers during WW2.
I've contacted military museums in Belgium and they told me that it perhaps a civil version.
2022-03-14 20.21.50.jpg2022-03-13 16.50.01.jpg2022-03-13 16.49.49.jpg

[Teck 147]

Looks like a civilian dynamo. It could even be a condensator/Switch from a Mine that used Mains Power instead of a generator

I've never seen a Wehrmacht Gluhzundapparat that's Nickel plated or has the Keyhole in the base

[Athomix]

Thank you Teck for your help !