I just thought of a perfect case. I bought a Rolex President in 18k gold (watch and band) in 1985 at a "Jewelry Mart" in downtown Los Angeles, through a friend. It was all genuine - no doubt about that, but when it broke down 4 years later (I wore it every day), I sent it to the Rolex Service Center in New York.
Fortunately, that friend warned me to tell Rolex not to polish or refinish the watch or band. But when I got it back, they had chipped off about half of the tritium on the dial, and they replaced the gold pins that secure the band to the watch with steel pins. And the watch broke down again in another 2 years.
So yes, the watch was genuine, but I had no real warranty protection, even from the genuine Rolex service center who ripped me off.
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