Lots of great options already mentioned, I am particularly biased towards Breguet and ALS. I would also look into Jaeger-LeCoultre. JLC is A LOT of bang for your buck. Under 30k gets you a pre-owned perpetual or Duometre Lunaire or a complicated reverso.
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Richard Mille RG RM030 || Richard Mille RM72ti || AP 26240 50TH Green Royal Oak Chrono || AP Royal Oak Blue JUMBO SS 15202ST || AP ROO Diver Green 15720ST || ♕ Rolex Platinum Daytona Diamond 116506 || Cartier Santos
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