Very fine and rare, rectangular, skeletonized, platinum Edward Piguet Tourbillon in Platinum with visible one-minute Tourbillon regulator
Case - polished and brushed, stepped bezel and lugs, transparent case back with 4 screws
Sapphire crystal. 
Skeleton dial with painted Arabic numerals and baton indexes
Tourbillon regulator under a polished steel bridge, carrying the subsidiary seconds hand at the 6 o'clock position.
Manual wind Caliber 2871, skeletonized and hand-engraved, rhodium-plated, 19 jewels, lateral lever escapement with one-minute Tourbillon regulator with steel cage and 3 equidistant polished steel arms, mono-metallic balance, shock absorber, self-compensating Breguet balance spring. 
Dial, case and movement signed.
Dim. 27 x 46 mm. Thickness 13 mm. 
Water resistant to 20 meters / 65 feet.