Vintage watch evaluation

Dr. Helmut Crott has followed the major watch and clock auctions worldwide since 1975, examining first hand many...

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Patek Philippe evaluation

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

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Rolex evaluation

The service at The Horologists team from Dr. Crott Consulting S.A.R.L. supports its expertise’s with 30 years...

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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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Creating a Horological Collection

The creation of a well-balanced horological collection can be a source of tremendous pleasure and pride. It is a...

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