The solid 18K yellow gold Rolex Cosmograph Daytona Ref. 116508 ("John Mayer", 2016–2023) and its next-generation successor Ref. 126508 (2023–present) both feature a 40.0 mm Au750 Oyster case and 72-hour column-wheel chronograph movement, but differ in case lug symmetry, sub-dial ring thickness, movement calibre (4130 vs. 4131), and verified mass (216.5g vs. 216.8g).
Key Quantitative Laboratory Takeaways
- Ref. 116508 pairs the classic asymmetric slim-lug 40mm case (12.2 mm thick, 216.5g) with red "DAYTONA" text and solid 18K yellow gold snailed sub-dials.
- Ref. 126508 introduces symmetrical wider lugs with downward-curved tips (11.9 mm thick, 216.8g), slimmer hour batons, and thinned chronograph sub-dial tracks.
- Mechanically, Ref. 116508 houses the legendary 201-part Calibre 4130, whereas Ref. 126508 introduces Calibre 4131 featuring the Chronergy escapement and Rolex Cotes de Geneve bridges.
- Both references in the Monte-Carlo Sovereign Register are milled from 100% solid 18K 3N yellow gold (Au750) and include pre-shipment 4K Mettler-Toledo + Fischer XRF verification.
| Specification | Rolex Daytona Ref. 116508 ("John Mayer" I) | Rolex Daytona Ref. 126508 ("John Mayer" II) |
|---|---|---|
| Production Era | 2016 – 2023 (First Emerald Green Dial Era) | 2023 – Present (60th Anniversary Architecture) |
| Precious Metal Alloy | Solid 18K 3N Yellow Gold (Au750) | Solid 18K 3N Yellow Gold (Au750) |
| Case Diameter & Height | 40.0 mm x 12.20 mm | 40.0 mm x 11.90 mm (0.30 mm Slimmer Profile) |
| Lug Profile Geometry | Asymmetric Lugs (Thinner Right Side) | Symmetrical Broadened Lugs + Curved Tips |
| Hour Marker Proportions | Wide Applied 18K Gold Chromalight Batons | Slimmer Elongated 18K Gold Chromalight Batons |
| Sub-Dial Register Design | Full Gold Snailed Counters + Red DAYTONA | Thinned Outer Sub-Dial Rings + Champagne Centers |
| Chronograph Calibre | Calibre 4130 (Swiss Lever Escapement) | Calibre 4131 (Chronergy Escapement + Cutout Rotor) |
| Verified Mettler-Toledo Mass | 216.5 Grams (Full 12.5 Oyster Links) | 216.8 Grams (Full 12.5 Oyster Links) |
How Do the Case Lugs and Sub-Dials Differ Between 116508 and 126508?
When placed side by side on a green velvet tray in our Monte-Carlo showroom, the visual evolution from the Ref. 116508 to the Ref. 126508 reveals two distinct design philosophies. On the classic Ref. 116508, the 40.0 mm Oyster case retains the historic asymmetrical lug profile introduced in 2000: the right-side lugs flanking the crown guards are slightly slimmer than the left-side lugs, while the applied 18K yellow gold hour markers and sub-dial rings are bold and wide. On the Ref. 126508, the middle case has been re-proportioned with symmetrical, slightly broader lugs that curve more sharply downward around the wrist, while total case thickness is pared down from 12.20 mm to 11.90 mm.
Comparing the Emerald Green Sunburst Dials: Classic Snailed Gold vs. Champagne Rings
Nicknamed the "John Mayer" after the musician highlighted the watch in 2019, the Ref. 116508 features a deep, rich metallic Kelly-green sunburst dial whose three chronograph counters are finished entirely in concentric-snailed 18K yellow gold with crimson-red inner minute ticks and a bold red "DAYTONA" arc above 6 o'clock. In the updated Ref. 126508 emerald edition, the green metallic lacquer takes on a brighter mint-emerald tone paired with refined, narrower sub-dial tracks, offering higher dial open-space contrast.
| Reference & Dial Nickname | Dial Finish & Color | Sub-Dial Contrast | Verified Mass (g) | Calibre |
|---|---|---|---|---|
| Ref. 116508 Emerald "John Mayer" | Metallic Sunburst Kelly Green | 18K Yellow Gold Snailed + Red Accents | 216.5g | Cal. 4130 |
| Ref. 126508 Green & Gold II | Radiant Mint-Emerald Sunburst | Champagne Gold Snailed Counters | 216.8g | Cal. 4131 |
| Ref. 116508 / 126508 "Paul Newman" | Glossy Black + Red Outer Track | Champagne Exotic Sub-Dials | 216.5g | Cal. 4130 / 4131 |
| Ref. 116508 Gibeon Meteorite | Natural Etched Iron-Nickel Meteorite | Black Snailed Sub-Registers | 217.4g | Cal. 4130 |
| Ref. 126508 "Le Mans" 18K Gold | Sunburst Black + Red "100" Bezel | White Exotic Reverse-Panda Counters | 217.0g | Cal. 4131 (24h) |
Calibre 4130 vs. Calibre 4131 and the 216.5g–216.8g Weight Benchmark
Despite the 0.30 mm reduction in overall case height on the Ref. 126508, its broadened symmetrical lugs add a fraction of a gram of solid Au750 bullion, bringing its full-bracelet mass to 216.8 grams compared to 216.5 grams on the Ref. 116508. Internally, both references utilize a vertical clutch and column wheel with a 72-hour power reserve, with the 4131 adding the nickel-phosphorus Chronergy escapement and Geneva-striped bridges.
Explore Verified Rolex Solid 18K Gold References in Our Register
Every timepiece referenced in this monograph is available for immediate allocation with pre-shipment 4K Mettler-Toledo gram weighing, Fischer XRF Au750 spectroscopy, and 6-position Witschi Chronoscope certification. Navigate directly to the 18K WATCHES Homepage Master Register, the Rolex Solid 18K Gold Collection Hub, or the Complete 774-Watch Catalogue:
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