Short answer
Reference 128236 is a genuine Rolex number for the Day-Date 36 in platinum. Rolex does not license copies. No authorized replica exists. Watches sold as "1:1" or "first copy" are unlicensed goods. Selling them in the United States is a federal crime under 18 U.S.C. § 2320.
The real watch
- Model: Rolex Day-Date 36
- Case: 36 mm, 950 platinum
- Movement: caliber 3255, self-winding, about 70 hours of power reserve
- Rate: Superlative Chronometer, -2 to +2 seconds per day
- Bracelet: President, concealed Crownclasp
- Water resistance: 100 m
- US retail: roughly $58,000 to $70,000. The figure moves with the dial, the year, and precious-metal pricing. Check with an authorized dealer.
Rolex keeps its public catalog thin. The company does not post a full reference index. A dealer or a Rolex service center can confirm a specific number.
What "v1" means
"V1" is a batch label used by a copy factory. It is not a Rolex code and it is not a grade. Version labels change by seller, by month, and by listing. Two sellers can use "v1" for two different watches.
No buyer can confirm a factory, a movement source, or a metal alloy from photos. Rolex publishes no list of copy makers. I cannot verify version numbers, tiers, or suppliers for counterfeit watches. That data is not checkable and the trade is illegal here.
Weight and material
Platinum has a density of 21.45 g/cm³. That is higher than 18k gold at about 15.6 g/cm³ and stainless steel at 7.9 g/cm³. A platinum Day-Date carries more mass than the same case size in gold or steel. Plated brass and plated steel do not match that number.
US law
- 18 U.S.C. § 2320 covers trafficking in counterfeit goods. A first offense carries up to 10 years. A second carries up to 20 years, plus fines.
- 15 U.S.C. § 1114 gives the trademark owner a civil claim.
- 19 U.S.C. § 1526 lets US Customs seize and destroy counterfeit imports.
- Card networks and online marketplaces block these listings under their own terms.
Checks that matter
Rolex places a serial number and a reference number between the lugs, under the bracelet. A watchmaker with Rolex training sees the caliber, the engraving, and the finish inside the case. The caseback on a platinum Day-Date is solid. None of those checks happen through a web photo.
The day and date discs, the fluted or smooth bezel, the dial texture, and the bracelet links all vary by reference. A mismatch between the reference and the dial is one sign of a mixed or altered watch.