I'm curious...has anyone here bought one of these recently and tried it? I mean the ones being sold today...not the ones from the 50s, 60s, 70s. Reactions? Thoughts? Anything? If so, can you tell me if the box showed where it was made? The country, I mean. Not the location of the distributor.
If you find this plug interesting, you might also want to read about what this guy did. Pretty clever and it cost him a lot less:
https://www.theflyingbanana.com/tfbtechtips.htm