Thought this group may know this one again. Not my original post, just saw it. Kinda maybe a polar relay or patch box?

https://www.reddit.com/r/whatisthisthing/comments/v9guem/metal_object_found_in_a_ww2_bunker_in_norway_has/?utm_source=share&utm_medium=ios_app&utm_name=iossmf
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