vonrozen
·How do you spot a service dial and hands on the GMT Master from the 1970s / early 80s ? Are there any clues to look out for ? Would be grateful to have your method and thoughts .
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This may help : https://gmtmaster1675.com/
Even if you’re going to pay a trusted dealer, it doesn’t hurt to train your eye and know the details anyway. You’ve started countless threads on vintage Omega and Rolex so you clearly have an interest.
Just narrow down your field to one or two models and time periods and start researching. It will come.