Usually you can find semi-accurate by looking up "vintage binding post" or just "binding post" in vintage electronics on eBay. They're just connection terminals for radios and stuff. So you'd stick the wire through the slot, then tighten it down to secure the connection. When it was first discovered somebody found a vintage radio repair website I think with a bunch of 'em and snagged the whole lot
The one Anders has is the closest I've seen to the real thing for sure. Just seems to be those bottom teeth that are missing. Very cool!
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