Entrepreneur GMK spotted wearing a Rolex

Monaco has long been a hunting ground for serious watch spotters, and GMK — the entrepreneur and collector known online as 'The Aberrant' — delivered a textbook sighting wearing the Rolex GMT-Master II reference 126715CHNR on an Oyster bracelet.
The 126715CHNR is built around Rolex's calibre 3285, a in-house movement introduced with this generation of GMT-Master II and certified as a Superlative Chronometer to ±2 seconds per day. It offers a 70-hour power reserve, Chronergy escapement, and a bidirectional rotor — a meaningful upgrade over the calibre 3186 it replaced. The 40mm Oyster case is rendered entirely in 18k Everose gold, Rolex's proprietary rose gold alloy formulated to resist fading. The bidirectional rotatable bezel carries a two-color Cerachrom insert in brown and black — the combination that gave the vintage reference its nickname. The black dial with applied hour markers and the Oyster bracelet with Easylink extension complete a package that is unmistakably dressy yet operationally serious.
The 'Root Beer' nickname traces back to the reference 1675 of the late 1960s and 1970s, which featured brown-and-yellow aluminum bezel inserts on a yellow gold case. Rolex retired the colorway for decades before reintroducing it in ceramic form on the 126715CHNR at Baselworld 2018. The revival landed immediately on collectors' radar — the brown-and-black Cerachrom combination is exclusive to the all-gold execution, meaning there is no steel equivalent, which concentrates demand considerably.
GMK's profile as a Monaco-based luxury car and watch figure makes the 126715CHNR a coherent choice rather than a statement piece for the camera. The model reads as a working GMT — a pilot's complication with an independent 24-hour hand for tracking a second time zone — dressed in precious metal for an owner who treats fine watches as daily instruments.
On the grey market, the reference trades well above its list price. Rolex's official retail sits at approximately $38,550 USD, but verified pre-owned and grey-market examples routinely clear $65,000, reflecting tight authorized-dealer allocation and sustained collector appetite for the all-gold Root Beer configuration.