Patek Philippe evaluation

Our extensive database of Patek Philippe watches is the largest in the world, the result of having analysed...

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Rolex evaluation

The Rolex service team at Dr. Crott Consulting supports its expertise’s with 30 years experience of inside...

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Vintage watch evaluation

This service provides an expertise on historical and collectors watches other than Patek Philippe or Rolex. Dr. Helmut...

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Buying and Selling at Auction

Successfully buying or selling high-end timepieces at auction requires specific skills. Comprehensive catalogue...

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