Only 50 pieces of this collector’s item have been produced, 30 of them numbered for «Greenwich Mean Time». This timepiece links quartz with an engraved, skeleton mechanical movement, visible in the centre. Its seven-sided 750 (18K) gold case is set with diamonds. The mother-of-pearl dial, protected by a faceted sapphire crystal, is divided into parts, each framed by a row of diamonds. One part is hand-engraved to facilitate reading the second time zone.