The Jaeger-LeCoultre Reverso Gyrotourbillon 2 is one of the most collectible Reversos ever made. Only 75 pieces were created, one of which sold on eBay" for $279,499 in February. Another will be up for sale at the August 25th Antiquorum auction in Hong Kong.
The Jaeger-LeCoultre Reverso Gyrotourbillon 2 comes is an oversized platinum Reverso case measuring 16 mm thick. The movement has a highly complicated double-axis spherical tourbillon with a cylindrical hairspring. Functions include hours, minutes, tourbillon seconds, reserve de march and date. The movement runs at 28,800 vph (4Hz), has 373 parts, 58 jewels and a 50-hour power reserve. Finishing inlcudes clous de Paris, anglage and perlage.
Considering the price paid for a Gyrotourbillon 2 earlier this year, Antiquorum's estimate seems low.