The Rolex 178273 is a 31 mm Datejust built in Oystersteel and 18k yellow gold, part of the Rolesor line. A fake Rolex 178273 is any counterfeit sold under that reference number, and the fastest tells are the 2.5x Cyclops magnification, the laser-etched coronet in the crystal, the rehaut engraving, and the movement inside the case.
What is the Rolex Datejust 178273?
Reference 178273 is a Datejust 31 with a two-tone build: steel case and caseback, yellow gold bezel, and a yellow gold winding crown. Rolex fitted it with the caliber 2235, an automatic movement with a 48-hour power reserve.
- Case size: 31 mm
- Materials: Oystersteel case with an 18k yellow gold fluted or domed bezel
- Movement: Rolex caliber 2235, automatic (earlier examples use the 2135)
- Water resistance: 100 m (330 ft)
- Crystal: sapphire with a Cyclops lens over the date
- Bracelet: Jubilee or Oyster in steel and 18k yellow gold
- Production era: roughly 2000 through the mid 2010s, before the 2782xx series replaced it
Dial options included silver, champagne, black, and mother-of-pearl, with diamond hour markers on many examples. The gold-and-diamond look made this reference a popular gift watch, which is one reason copies are common.
Why are there so many fake Rolex 178273 watches?
A two-tone Datejust looks expensive without a solid-gold price tag, so demand for copies stays high. Counterfeiters target the 178273 because a 31 mm case is small enough to hide machining flaws that would stand out on a 41 mm watch.
Most copies use gold-plated steel rather than solid 18k gold. That shows up at the clasp and crown, where plating rubs thin and turns gray within a few years of daily wear.
How do you spot a fake Rolex 178273?
The crystal and Cyclops lens
Rolex sapphire carries a Cyclops lens that magnifies the date 2.5 times. Copies often magnify less, or they distort the date when you view it from an angle. Since 2002 the crystal also holds a laser-etched coronet at 6 o'clock, which you can see under a loupe.
The dial and date wheel
Dial print is crisp and raised on genuine examples; on copies the text smears or sits flat against the surface. The date font is consistent and centered in the window on a real watch, with even spacing between the numeral and the edge of the aperture.
The case, caseback, and rehaut
Genuine 178273 cases show the reference and serial numbers engraved between the lugs, at 12 and 6 o'clock. The rehaut, the inner ring under the crystal, repeats the ROLEX ROLEX engraving on later examples. Copies often skip it, or cut it shallow enough to disappear in photos.
The bracelet, clasp, and gold stamps
A real Jubilee bracelet on a 178273 fits tight and does not rattle, and every gold part is stamped 750 for 18k. The coronet on the clasp is stamped with sharp edges. On copies the clasp stamp looks soft and the plating flakes at the edges.
The movement
This is where the difference becomes plain. A genuine caliber 2235 has Geneva stripes, a free-sprung balance, and the Rolex name engraved on the rotor and bridges. A counterfeit usually hides a Chinese or Japanese base movement, plated and rough, running at a lower beat rate.
What does a real Rolex 178273 cost?
Pre-owned 178273 prices depend on the dial, the bracelet, and whether box and papers are included. Most steel-and-gold examples sell between about $6,000 and $10,000, and diamond-set dials or full-set examples push past that range.
Dial rarity moves the number more than the movement does. Mother-of-pearl and factory diamond dials can add thousands, and a full set with box, papers, and spare bracelet links sells for more than a watch-only example.
Is buying a fake Rolex 178273 illegal?
Selling, importing, or distributing counterfeit watches is illegal in the United States. The Lanham Act lets a trademark owner sue for damages, and U.S. Customs and Border Protection can seize counterfeit shipments at the border.
Buying a fake for personal use is rarely prosecuted, but you get no warranty, no service from Rolex, and no resale value. Many watchmakers turn away copies because replacement parts do not exist.
How do you authenticate a 178273 before you buy?
- Ask for close photos of the engravings between the lugs and the clasp stamp.
- Request a timegrapher reading. A caliber 2235 runs at 28,800 vibrations per hour; many fakes run at 21,600.
- Check the Cyclops magnification and whether the date sits centered.
- Meet at a watchmaker and have the caseback opened before money changes hands.
- Ask whether Rolex has serviced the watch. Rolex keeps service records but publishes no public serial database.
Frequently asked questions
Is the 178273 a men's or women's watch?
The 31 mm case is a mid-size. Rolex lists it as a Datejust 31 and sells it to both men and women, though most buyers treat it as a unisex or women's size.
Does a fake 178273 hold value?
No. Counterfeit watches lose nearly all value the moment you buy one. A genuine 178273 keeps value because the gold and the movement have worth on their own.
Can a jeweler tell a fake 178273 from a real one?
Yes. Most watchmakers identify a copy within minutes using a loupe and a caseback opener. The engravings, the movement finish, and the Cyclops magnification settle the question.
What replaced the 178273?
The Datejust 31 moved to the 2782xx references with the caliber 2236, which added a Syloxi hairspring and a longer power reserve. Buyers who want the older size and the 2235 movement still shop the 178273 on the secondary market.