The new RM-07 in a minty green. Richard Mille Richard Mille was the first to make a watch case entirely of sapphire crystal in 2012, so the material is a bit of a specialty at the house.

Watches from Cartier, Rolex, Patek Philippe and F.P. Journe also performed well at the live auction, which kicked off Christie’s "Luxury Week" in New York.