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...
Read moreVintage watch evaluation
This service provides an expertise on historical and collectors watches other than Patek Philippe or Rolex. Dr. Helmut...
Read moreBuying and Selling at Auction
Successfully buying or selling high-end timepieces at auction requires specific skills. Comprehensive catalogue...
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