Entry to the Grand Prix d'Horlogerie de Genève is voluntary and made by the brand. An entry is a watch registered for that year's competition, not a jury verdict, and several large houses including Rolex, Patek Philippe and Omega do not take part at all.
The Challenge category at GPHG 2019 held 22 entries. These are the other 21.
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MING 17.06 GMT; verify GMT function operation and serial against community tracking.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| dial | GMT complication indicators | GMT hand and 24-hour bezel or indicator functioning correctly; hour markers correctly scaled for dual-time reading | GMT hand that does not move independently, 24-hour display that does not function correctly |
| crown | GMT crown positions | Crown positions correctly adjust local hour, minutes, and GMT reference independently per MING 17.06 specification | Crown that only adjusts time without GMT function, positions that do not correspond to specification |
| caseback | 17.06 designation and serial | MING 17.06 on caseback, serial within production range, caliber reference correct | Wrong reference designation, unverifiable serial |
Ming 17.06 is the GMT variant on an ETA 2893-2. The inner GMT bezel ring rotation and correct 24h hand behavior are functional authentication checks in addition to the standard Ming dial checks.