Technical What is this? 331 hemi part

Appears to be a coil; in what I don’t know, is it a handmade case the coil sits on? Or factory? Marine? Is this for a car , truck? This is a late 1953 manifold for 331 Hemi, Stromberg Aerotype 2BBL, with the “heated” carb riser.
Any ideas? Thanks all!!

 

Looks like you’ll need an adapter. He he.

 

Speed governor?
The whole assembly looks a lot like my '58 truck 354.

 

Looks like something military with the coil inside a sealed housing.

 

Update; coil is 24 volt. I am thinking this is a marine application.

 

24 volt could be industrial or military.
https://www.jalopyjournal.com/forum/threads/interesting-chrysler-hemi-donor-vehicle.1181794/