Polishing a serial Rolex is a no-go in my book; it not only flattens the engraving but also erodes the patina, which is crucial for authentication. Speaking of authenticity, the current market's scarcity of 'Professional models' from ADs makes purchasing a genuine piece a real challenge, often leading collectors to resort to the grey market, where the purchase history is a mystery.
When buying a new Rolex without going through an AD, always "buy the seller" to avoid Franken-watches or unexpected service fees. Don't just focus on the watch; check the seller's reputation. One dodgy dealer can spoil the whole experience.
When buying luxury watches like Rolex, especially from private sellers without an AD, make sure you're "buying the seller," not just the watch. There's a risk of Franken-watches or unexpected service costs, so always verify the piece's authenticity and condition.