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Discussion Starter · #1 ·
Another noob question, a forum search (surprisingly) turned up nothing. I think I'm searching wrong... :(

What is an "unbreakable mainspring"?
What is a "lifetime mainspring"?

I have seen this printed on the dial of some old watches. I am pretty sure I saw them on regular manual wind watches, so the wikipedia entry which says that this is an "automatic watch" feature doesn't make sense to me.

Thanks!
 

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Discussion Starter · #4 ·
Thanks to you both! that makes perfect sense.

Once again wikipedia has betrayed me! :(
 
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