The two ingenious watchmakers Robert Greubel and Stephen Forsey did show me the new Tourbillon 24 Secondes Vision and two declinations of the existing GMT model. Here are the pictures…
Greubel Forsey GMT
Unique edition
22 pieces in black ADLC titanium
Mechanical hand-wound movement with patented tourbillon Calibre GF05
2nd time zone GMT display • Tourbillon 24 Secondes • titanium rotating globe
with universal time display • 24 time zone worldtime display • summer time indicator • worldtime disc with summer time zones • day-and-night indicator • power-reserve indicator • hour and minute display • small second indicator • GMT pusher • equatorial synthetic sapphire crystal lateral window