Christie's raised a world record $44 million (33 million euros) for luxury watches in a two-day sale, the auction house said Tuesday.
The star earner of the collection was a pink gold Patek Philippe watch that fetched $2.1 million (1.6 million euros), Christie's said in a statement.
Another gold watch by the Swiss watchmaker, dating from 1947, sold for $1.57 million.
The auction house sold 50 Rolex Daytona "Lesson One" watches in the first session for a total of $13.24 million, including one for just over $1 million, Christie's said.
In a jewellery auction on Tuesday, Christie's will put up for sale the world's largest known orange diamond, valued at $17-20 million.