There are several luxury watch brands that are known for selling the most expensive watches. Some of the most well-known and prestigious brands include:

1. Patek Philippe - Patek Philippe is a Swiss watch brand that is renowned for its intricate designs and complicated movements. Some of the most expensive watches ever sold were made by Patek Philippe.

2. Rolex - Rolex is a luxury watch brand that is known for its high-quality and durable watches. While not all Rolex watches are necessarily the most expensive, some of their limited edition or vintage models can fetch high prices.

3. Richard Mille - Richard Mille is a relatively new brand that has quickly gained popularity for its innovative designs and use of advanced materials. Many of their watches have price tags that reach well into the millions of dollars.

4. Audemars Piguet - Audemars Piguet is a Swiss watch brand that is known for its luxurious and elegant watches. They are particularly famous for their Royal Oak and Royal Oak Offshore models.

5. Vacheron Constantin - Vacheron Constantin is a Swiss watch brand that has been in operation since 1755. They are known for their traditional and sophisticated designs, as well as their use of high-quality materials.

These brands are just a few examples of luxury watch brands that are known for selling some of the most expensive watches in the world.

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