Cartier Ref. 2611 (Lot 17)
This cuff might look as if it dates from the 1920s, but Cartier created it less than a decade ago, in 2010. The Declaration, a mix of white gold, titanium, and diamonds, houses a tiny watch in the center that you might need to squint a little to read. That said, it's a total show-stopper and I couldn't flip past it in the catalog without taking a second look. Estimate: $2,500-$3,500.