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> I had figured the hour hand had a tiny gearing mechanism in the connection between the two hands.

They have a previous version that was exactly that: https://www.youtube.com/watch?v=XCOC2zNjWCg&list=PLAYNJqEoXT...

The movement of the hour hand is pretty terrible though.

That was a big thing in the 1950s. The Jefferson Electric Golden Hour clock worked the same way. One was given away with every Philco TV set one year, and millions were made.[1] They're available on eBay. Real gold plating, even.

[1] http://roger-russell.com/jeffers/jefhour.htm

TIL about Jefferson Golden Hour Clocks. Thanks for sharing - these are amazing.

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