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: I was recently told that you can tell if a
: rolex or omega is real by holding a magnet
: upto the face of the watch. If it is real
: the watch will keep working because the
: inner workings of the watch can not be
: magnatised. If it is fake the watch will
: stop working. Is this true? Do top end watch
: companies do something to the inner workings
: of their watches to stop them from being
: affected by magnets? This has been said to
: be true ONLY on watches that are less than
: 20 years old.
Now there's an interesting question... IWC produced the Ingenieur that held (and still holds) the record as the most anti-magnetic watch but it was in a soft iron case and would certainly have been held and lifted by a magnet. see https://www.iwc.ch/communication/events/sihh05/events_ingenieur2005-en.asp
and http://www.ozdoba.net/swisswatch/magnetism.html
Likewise, a steel cased genuine or fake Rolex/Tag/Omega, etc., will be lifted by a magnet because steel is attracted to magnets.
The essence of anti-magnetism in a watch mechanism is that the hairspring resists the effects of magnetism to a certain level (4,800Amps/metre) and does not become magnetised.
http://nawcc-mb.infopop.cc/eve/forums/a/tpc/f/6286058233/m/1951003941 explains what happened to the writer's watch when the hairspring becomes magnetised.
However, it is best to keep all watches away from magnets, particularly speaker magnets or the more powerful rare-earth element magnets.
Which made me think; I have 4 Automatic watches happily going round and round on an automatic winder. This is powered by an electric motor and thus the watches will be in a magnetic field...
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