This is the original lecture given by Dr. Matthew Clark on the topic of Hairspring Dynamics for American Watchmakers-Clockmakers Institute...
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1970’S Nivada watch with AS.1916 movement
Hi: Recently, I bought a Nivada watch with an AS.1916...
cjf90 , 5 days ago
It's a lovely design! The case engraving is the case nu...
Crobieson , 1 week ago
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