Tourbillon: A form of escapement within a rotating cage built to counter the consequences of gravity and boost precision Whilst inside the 70s, mechanical watches went away from vogue and developments turned in the direction of quartz, given that then mechanical mastery has once again turn into a precedence within https://www.watchesworld.com/a-history-of-watch-reference-numbers/
The Basic Principles Of A History of watch reference numbers
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