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#1 |
Banned
Join Date: Apr 2013
Location: NY
Posts: 513
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Cal. 324 and silicon balance spring?
Hi folks,
Does anyone know when silicon balance spring was introduced into 324 movements? |
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#2 |
Banned
Join Date: Mar 2014
Location: UK
Posts: 3,990
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Spiromax first appeared 10 years ago, in the 300-piece AC 5350.
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#3 |
Banned
Join Date: Apr 2013
Location: NY
Posts: 513
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