The top lot at Christie's Patek Philippe 175th Anniversary sale was a Patek Philippe watch Reference 2499 First Series that fetched over $2.6 million, one of only four examples in pink gold of the perpetual calendar chronograph watch with Moon phases and

The top lot at Christie's Patek Philippe 175th Anniversary sale was a Patek Philippe watch Reference 2499 First Series that fetched over $2.6 million, one of only four examples in pink gold of the perpetual calendar chronograph watch with Moon phases and English import marks manufactured by Patek in 1951.