Rolex GMT-Master II 126713GRNR with black dial, grey and black bezel, yellow gold numerals, steel and gold Jubilee bracelet

Rolex GMT-Master II 126713GRNR "Guinness": Reference Guide and October 2026 Market Data

by Honeyrock Luxury Editorial on Oct 05 2026

Rolex confirmed the end of the steel GMT-Master II 126710BLRO "Pepsi" at Watches and Wonders in April 2026, and the attention it drew has spilled across the rest of the GMT family, including the Yellow Rolesor Ref. 126713GRNR. The 126713GRNR is a 40mm steel and yellow gold GMT-Master II with a grey and black Cerachrom bezel, introduced in 2023 and still in the current catalogue at a US retail price of $20,450 on rolex.com as of 5 October 2026. On the secondary market it trades close to that figure: WatchCharts puts its value retention at +1.9% over retail as of 30 September 2026, while Chrono24 asking prices on 5 October 2026 had a median of $23,177.

Key facts

The Rolex GMT-Master II Ref. 126713GRNR is a 40mm Yellow Rolesor (Oystersteel and 18k yellow gold) watch with a two-colour grey and black Cerachrom 24-hour bezel insert.
Ref. 126713GRNR was introduced at Watches and Wonders 2023 at a US retail price of $16,450, according to Monochrome Watches.
Rolex's US retail price for the 126713GRNR on Jubilee was $20,450 on rolex.com on 5 October 2026, about 24% above its 2023 launch price.
The 126713GRNR uses the Rolex Manufacture calibre 3285, rated by Rolex at approximately 70 hours of power reserve and -2/+2 seconds per day after casing.
"Guinness" and "Zombie" are collector nicknames for the 126713GRNR; Rolex itself does not use either name.
WatchCharts recorded 1,505 sales of the Rolex 126713 over one year, a median of 19.0 days on market and 4.6% price volatility, as of 30 September 2026.
On 5 October 2026, Chrono24 showed 358 listings for the 126713GRNR; 59 captured asking prices ranged from $20,671 to $30,292.
WatchPro reported on 28 February 2026 that authorised dealers had been told there would be no more deliveries of the steel GMT-Master II 126710BLRO "Pepsi".

What the 126713GRNR is

The Ref. 126713GRNR is the Yellow Rolesor version of the Rolex GMT-Master II: a 40mm Oystersteel and 18k yellow gold case with a black dial and a bidirectional 24-hour bezel carrying a grey and black Cerachrom insert.

The Rolex product page lists the 126713GRNR on the five-piece Jubilee bracelet in Yellow Rolesor, with a folding Oysterlock safety clasp and the Easylink 5mm comfort extension link. Water resistance is 100 metres, or 330 feet, and the dial uses Chromalight luminescence on the hands and hour markers. Rolex describes the bezel as a "Bidirectional rotatable 24-hour graduated bezel. Two-colour grey and black Cerachrom insert in ceramic, moulded numerals and graduations."

The watch arrived at Watches and Wonders 2023. Monochrome Watches listed its launch price at USD 16,450, EUR 16,300 and CHF 15,700, and was candid about how little had changed mechanically:

"This new Steel and Yellow Gold Rolex GMT is nothing more than a visual update."
Monochrome Watches, hands-on review of the Rolex GMT-Master II 126713GRNR, 2 May 2023

That is the point of the reference. The case, movement and bracelet architecture are shared with the rest of the modern GMT-Master II line; what the 126713GRNR changes is tone. The same review put it plainly: "The rest is all discreet, subtle. This new insert is almost like a graduation on black."

Where the "Guinness" nickname comes from

"Guinness" is a collector nickname, not a Rolex name. Rolex's own materials refer to the watch only as the GMT-Master II in Oystersteel and yellow gold, Ref. 126713GRNR. Luxury Bazaar's Rolex nickname guide says "Guinness" references the dark stout's appearance, a fair description of a black dial and grey and black bezel framed in yellow gold. The same guide notes that "Zombie" is also applied to the 126713GRNR, while the full yellow gold sister reference, the 126718GRNR, is sometimes called "Bumblebee".

Swiss Watch Expo also records both names, describing the 126713GRNR as "often referred to by collectors as the 'Guinness' or 'Zombie'." Usage is not settled. Luxury Bazaar gives the steel 126710GRNR, which shares the same bezel colours, the nickname "Bruce Wayne", and the names overlap in dealer listings. When searching, the reference number is the only reliable identifier.

Calibre 3285: the movement inside

Every current GMT-Master II, including the 126713GRNR, runs on the Rolex Manufacture calibre 3285. According to the Wikipedia entry for the GMT-Master II, the calibre arrived with the 2018 GMT-Master II models and added Paraflex shock absorbers and a 70-hour power reserve, up from 48 hours on the outgoing calibre 3186.

Monochrome's review lists the main components: the Chronergy escapement with paramagnetic nickel-phosphorus parts, the blue Parachrom hairspring and a bidirectional winding rotor. Rolex rates the movement at approximately 70 hours of reserve and certifies it as a Superlative Chronometer at -2/+2 seconds per day after casing.

The GMT function pairs the local hour hand with a separate 24-hour hand for a second time zone. Rolex explains the second display this way:

"The distinctively coloured 24-hour hand displays the 'home' reference time in a first time zone which can be read on the graduations on the bezel."
Rolex, GMT-Master II Ref. 126713GRNR product page

126713GRNR vs. the other GMT-Master II references

The 126713GRNR shares its 40mm case and calibre 3285 with every reference in the table below. What separates them is metal, bezel colour, bracelet and, in one case, the side of the case the crown sits on. Retail prices are from rolex.com (US) on 5 October 2026 for the bracelet shown; the 126710BLRO no longer has a retail price.

Reference	Collector nickname	Case	Bezel insert	Introduced	US retail, 5 Oct 2026
126713GRNR	Guinness, Zombie	Yellow Rolesor	Grey and black	2023	$20,450 (Jubilee)
126710BLRO	Pepsi	Oystersteel	Blue and red	2018	Discontinued 2026
126710BLNR	Batman, Batgirl	Oystersteel	Blue and black	2019	$11,800 (Oyster)
126711CHNR	Root Beer	Everose Rolesor	Brown and black	2018	$20,050 (Oyster)
126710GRNR	Bruce Wayne	Oystersteel	Grey and black	2024	$11,800 (Oyster)
126720VTNR	Sprite	Oystersteel, crown on left	Green and black	2022	$12,500 (Jubilee)

Introduction years come from Wikipedia (126710BLRO, 126710BLNR, 126720VTNR), Swiss Watch Expo (126711CHNR), Monochrome Watches (126713GRNR) and SJX Watches (126710GRNR). Nicknames follow Luxury Bazaar's guide.

The most direct comparison is the steel 126710GRNR, which arrived a year after the 126713GRNR with the same grey and black insert. SJX's JX Su called it "perhaps the most useful variant of the GMT-Master II since it is the most low key." The two-tone 126713GRNR takes that same muted bezel and adds gold, which is why it sits at a retail price $8,650 above the steel version on an Oyster bracelet. Its closest peer on price is the Everose Rolesor 126711CHNR "Root Beer", $400 cheaper at retail and the other two-tone GMT-Master II in the catalogue.

The 2026 Pepsi discontinuation and what it did to the market

The biggest GMT-Master II story of 2026 is not a launch. WatchPro reported on 28 February 2026 that Rolex had told authorised dealers there would be no more deliveries of the steel 126710BLRO "Pepsi". WatchPro USA then reported on 15 April 2026 that the discontinuation was confirmed at Watches and Wonders 2026. Swiss Watch Expo's list of 2026 discontinuations includes both the steel 126710BLRO and the white gold 126719BLRO, and notes that no red and black "Coke" GMT-Master II appeared to replace it. We found no verified new GMT-Master II reference introduced at Watches and Wonders 2026.

The market response was measurable. In its coverage of EveryWatch's first-half 2026 data, WatchPro wrote on 4 August 2026 that the Pepsi discontinuation "triggered a buying frenzy" that increased sales for a single reference by 78% to $44 million. The same report put Rolex secondary market sales at $4.3 billion for the first half of 2026, up 43.5% year on year. EveryWatch also commented on Rolex's Certified Pre-Owned programme in that report:

"Rolex CPO is emerging as the model the rest of the industry should study: brand-backed certification converting directly into liquidity and share gains."
EveryWatch, quoted by WatchPro, 4 August 2026

The 126713GRNR was not discontinued and remains in Rolex's catalogue. For buyers, that matters in two ways: new supply continues through authorised dealers, and the reference is not subject to the scarcity pricing that followed the Pepsi announcement.

126713GRNR market data, October 2026

Three data sets frame where the 126713GRNR sits today.

Transaction data. WatchCharts, as of 30 September 2026, shows value retention of +1.9% over retail for the 126713, with 1,505 sales over the past year, a median of 19.0 days on market and price volatility of 4.6%. A secondary price within two percent of retail, combined with short time to sale, describes a liquid reference trading close to its list price rather than at a scarcity premium.

Asking prices. On 5 October 2026, Chrono24 showed 358 listings for the 126713GRNR. Of the 59 prices we captured, asking prices ran from $20,671 to $30,292, with a median of $23,177. These are asking prices, not completed sales, and they include dealer margin, set completeness and year of production.

Brand context. The WatchCharts Rolex index stood at 27,991 as of 30 September 2026, up 5.2% over one year. Collector demand at the top of the market also stayed visible at the 28 September Four Seasons Daytona auction.

On the retail side, the 126713GRNR's US list price has risen from $16,450 at launch in 2023 to $20,450 today. For first-time buyers weighing an authorised dealer wait against the secondary market, our guide to buying a first pre-owned luxury watch in 2026 covers the checks that matter.

The Honeyrock example

Honeyrock currently offers a Rolex GMT-Master II 40mm Two-Tone "Guinness" 126713GRNR, listed as a 2026 watch in excellent condition with its full set. It is on the Yellow Rolesor Jubilee bracelet, as shown in the photograph above. The listed price is $23,490, which sits close to the 5 October 2026 Chrono24 median asking price of $23,177.

Like every watch Honeyrock lists, this example was vetted by our physician-led vetting team and is covered by Honeyrock's lifetime Authenticity Guarantee.

For collectors comparing GMT options outside Rolex, our Tudor Black Bay 58 GMT deep dive looks at the red and black bezel Rolex did not deliver in 2026.

Frequently asked questions

When did Rolex release the GMT-Master II 126713GRNR?

Rolex introduced the GMT-Master II 126713GRNR at Watches and Wonders 2023, at a US retail price of $16,450 according to Monochrome Watches.

Why is the Rolex 126713GRNR called the "Guinness"?

"Guinness" is a collector nickname, not a Rolex name. According to Luxury Bazaar, it references the dark stout's appearance, echoed by the black dial and grey and black bezel. The 126713GRNR is also sometimes called the "Zombie".

How much is the Rolex GMT-Master II 126713GRNR at retail in the US?

Rolex listed the GMT-Master II 126713GRNR at $20,450 on rolex.com (US) on 5 October 2026, on the Yellow Rolesor Jubilee bracelet.

Was the Rolex 126713GRNR discontinued in 2026?

No. The steel 126710BLRO "Pepsi" and the white gold 126719BLRO were discontinued in 2026. The 126713GRNR remains in Rolex's current GMT-Master II catalogue.

What is the difference between the 126713GRNR and the 126710GRNR?

Both GMT-Master II references have a grey and black Cerachrom bezel and calibre 3285. The 126713GRNR (2023) is Yellow Rolesor, steel and 18k yellow gold, at $20,450. The 126710GRNR (2024) is all Oystersteel, at $11,800 on Oyster.

What movement is in the Rolex 126713GRNR?

The Rolex 126713GRNR uses the Manufacture calibre 3285, with a Chronergy escapement, a blue Parachrom hairspring, approximately 70 hours of power reserve and Superlative Chronometer precision of -2/+2 seconds per day.

Sources

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