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Posted
Didn't some of these watches have some solid gold wheels inside ?
I believe Illinois had some...

The center wheel looks like it is solid gold.


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Posted
5 hours ago, Dpastl said:

Are solid gold wheels mechanically better than brass, or is it just because they can?

 

I wouldn't think so, gold, is a much softer metal than the brass conventionally used in watch movements and I suspect solid gold components, even if made of 9ct (0.375% gold), would wear out appreciably faster than their brass equivalents......

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