Short answer
A replica Rolex 178273 is a copy of the 31mm Datejust in steel and yellow gold. Good ones run a 2671-style automatic, measure about 31mm across, and sell somewhere between $250 and $700 depending on movement, gold content, and bracelet quality. This reference is easier to copy well than a steel-only Datejust because two-tone cases hide small flaws. It is also harder to copy perfectly, because the fluted bezel and the jubilee bracelet are exactly where cheap versions announce themselves.
What the genuine 178273 is
Rolex built the 178273 as part of the mid-size Datejust family, sold through the 2000s and into the 2010s. It pairs a 31mm Oyster case in 904L steel with an 18k yellow gold fluted bezel, a gold winding crown, and a five-link jubilee bracelet. Rolex calls that steel-and-gold mix Rolesor. Inside sits a 2235 or, in later production, a 2236 automatic, both running at 28,800 vibrations per hour with a date at 3 o'clock under a cyclops. Rated water resistance is 100 meters, and the crystal is sapphire.
Knowing those specs matters because they are the checklist you measure a replica against. If a seller cannot tell you the case diameter, the movement, and the bracelet type, you already know how the rest of the conversation will go.
Why this reference gets copied so much
Two reasons. First, 31mm is a size people actually want: it works on a smaller wrist, and plenty of men prefer it to a 36mm or 41mm Datejust. Second, gold is expensive. A two-tone look delivers most of the visual punch of a solid gold watch for a fraction of the cost, and that logic applies to replicas just as strongly as it does to the real thing.
Movement tiers you will run into
Almost every replica 178273 falls into one of these buckets:
- Low-grade automatic, 21,600 vph. Cheapest tier. The seconds hand sweeps in six visible steps instead of eight, and the date flips late or sloppily.
- 2671-style clone, 28,800 vph. The standard for decent mid-size Datejust replicas. Smooth sweep, reliable enough, parts are findable.
- Swiss ETA 2671. Same architecture, better finishing and consistency. Usually adds a few hundred dollars.
- Cloned 2235 or 2236. Rare and expensive. Closest to genuine in looks and behavior, hardest to service.
Testing the sweep is the fastest way to sort sellers. Count the ticks per second on the seconds hand: eight means 28,800, six means 21,600.
Case, bezel, and gold
Measure with calipers if you can. A 178273 case should read about 31mm across the bezel, not 30 and not 33. Look at the lugs: they should taper cleanly and sit close to the bracelet end links without a visible gap. The fluted bezel is the tell. Genuine fluting has sharp, polished ridges with crisp bevels that catch light in narrow slivers. Cheap replicas cast a soft, rounded version that sparkles broadly and looks flat in photos.
On gold, ask whether the plating is electroplated or wrapped. Plated gold is microns thin and will wear through at the crown and clasp within a year or two of daily wear. Wrapped gold carries a much thicker layer, costs more, and holds color longer.
Bracelet and clasp
The jubilee is five links across, with the outer links polished and the inner links brushed on this reference. On cheap builds the center links are hollow and rattle. On better ones they are solid, and the bracelet drapes instead of folding. Check the end link fit at the lugs, the clasp stamping, and whether the bracelet shows stretch. A new replica with a sloppy clasp is a sign the factory cut corners everywhere else too.
Dial, hands, and the cyclops
Sunburst dials should shift tone as the light moves, not look like painted flat metal. Printing should be thin and black, with the coronet sitting straight at 12. The date font matters: oversized or cramped numerals are common on low-tier builds. Finally, check cyclops magnification, which should be around 2.5x, and confirm the date sits centered in the lens and not off to one side.
What you should expect to pay
Entry replicas with a 21,600 movement land near $250. The solid middle, a 2671 clone, sapphire, decent plating, and a properly fitted jubilee, sits around $350 to $500. Above that you are paying for wrapped gold, a Swiss movement, or a cloned calibre. If a listing quotes $80 and promises Swiss parts, one of those two things is not true.
Limits worth knowing before you buy
Plating wears. Water resistance is a claim, not a guarantee, so keep it out of the pool. Servicing is a coin flip depending on which movement you end up with. And resale value is effectively zero. Buy it as a watch you will wear, not as anything else.
Quick checklist
- Confirm 31mm case diameter.
- Ask for the movement model and factory.
- Inspect bezel fluting sharpness in close-up photos.
- Verify plated versus wrapped gold.
- Check end link fit and clasp action.
- Confirm cyclops magnification and date alignment.
- Request a timegrapher reading if the seller has one.