Jaeger-LeCoultre originally debuted its complicated dual-axis tourbillon-equipped halo timepiece — the Gyrotourbillon — inside a round-shaped watch case in 2004. Four years later, the Le Sentier-based manufacture introduced the Gyrotourbillon 2. This time, instead of a round case, the two-axis tourbillon movement was fitted inside a rectangle-shaped reversible Reverso case.

The creation of the sophisticated hand-wound movement inside a smaller rectangular case was even more of a feat than the original Gyrotourbillon represented. The case measures 36 mm in diameter with a 55 mm lug-to-lug length and a thickness of 15.8 mm. Inspired by marine chronometers of the past — two tourbillon cages rotating on different axes, and at different speeds,  with 6 shock absorbers on all axis pivots, and with a single helical (or spiral) balance spring that counters the negative effects of gravity.

This particular example was manufactured in 2009, number 2/20, Ref. 247.3.07 with an 18K white gold case, and it was sold at Antiquorum in December 2013 (Lot 55) for $201,750.