PilotIWC
Pilot Mark XX
★★★★★
40mm·Auto
Rolex
Pilot Watche1955| Reference | 6542 |
|---|---|
| Year | 1955 |
| Case Diameter | 38mm |
| Water Resistance | 50m |
| Movement | Automatic |
| Caliber | 1036 |
| Case Material | Stainless steel |
| Bezel | Bakelite |
| Crystal | Acrylic |
| COSC | No |
The 6542 is the first GMT-Master, developed in collaboration with Pan American Airways for transatlantic flight crews. The original Bakelite bezel was famously fragile — most surviving examples have been replaced by aluminum bezels. Pre-bezel-update 6542s with original Bakelite are among the most valuable Rolex sport watches.