Quick answer
The reference 118238 is a Rolex Day-Date 36 in 18k yellow gold. Rolex built it from about 2000 to 2019, then replaced it with the 128238. Replica versions exist at several price levels. None use a solid 18k case. None carry the caliber 3155. None match the weight of the real watch on a scale. A replica can pass in a photo. It does not pass in the hand.
What the real 118238 is
- Case: 36 mm, 18k yellow gold, sapphire crystal, Twinlock crown
- Bracelet: President, three piece links, concealed Crownclasp
- Movement: caliber 3155, automatic, double quickset for day and date
- Display: day window at 12 o'clock, date at 3 o'clock under a Cyclops lens
- Water resistance: 100 m
- Bezel options: fluted, domed, or diamond set
- Production run: about 2000 to 2019
The day disc is offered in 26 languages. The 3155 lets the wearer set the day and the date independent of the hands, a feature Rolex calls double quickset. The successor 128238 uses caliber 3255.
Where replicas diverge
Metal and weight
A real 118238 on a full President bracelet weighs roughly 170 to 190 g, depending on link count. Plated steel replicas land near 110 to 140 g. Plated brass versions sit lower. Plating color drifts toward orange or toward pale yellow, and it wears through at the clasp and crown.
Bezel
The fluted bezel on the real watch is cut from solid gold. Each flute reflects light along a sharp ridge. Replica bezels are cast, so flute edges read soft and the reflections are flat.
Day and date
Check the day aperture. Real day text sits centered in the window with even spacing. Replicas show off center text, a crooked date wheel, or a day that snaps over at 11:58.
Bracelet
President links are rounded in section. Replica center links are often flat on the underside. End links fit loose against the case.
Movement
Most replicas labeled as 3155 use a decorated Asian automatic, commonly an ETA 2836 pattern. The day and date advance together with the hands, not independent of them. Engraved bridges and fake rotor stamps do not change the function.
Hallmarks
Real cases carry 750 stamps and Swiss gold hallmarks between the lugs. Replicas usually carry laser etching that copies the shape but not the placement.
Replica price tiers
- Budget, about 40 to 120 USD: quartz or basic automatic, plated case, wrong case dimensions.
- Mid, about 200 to 500 USD: closer case shape, sapphire glass, 2836 based movement.
- Upper, about 500 to 1200 USD: cloned movement, closer dial print, real sapphire, still not gold.
Labels such as 1:1, Swiss made, and super clone appear at every tier. They carry no fixed meaning and no shared standard.
Checks that take a minute
- Weigh the watch on a kitchen scale.
- Look between the lugs for hallmarks and a 750 stamp.
- Pull the crown to the first position and turn it. The day should move alone.
- Inspect the clasp stamp and the crown relief.
- Check the rehaut engraving for depth and alignment.
Legal and practical notes
Rolex holds trademark registrations on the name, the crown logo, and the case shapes. US Customs and Border Protection seizes counterfeit watches at ports of entry. Selling a counterfeit watch is trademark infringement and carries civil and criminal exposure. Resale value is zero. Rolex service centers will not accept the watch, and independent watchmakers often decline to work on replica movements.
Questions to ask a seller
- What is the case metal, and is it plated or solid?
- What movement is inside, and what is the base caliber?
- Does the day set independent of the date?
- What is the measured weight?
- What is the return policy in writing?
A seller who answers these five questions with numbers and part names is giving usable information. A seller who answers with adjectives is not.