What the Rolex 124200 Is
The reference 124200 is the Rolex Datejust 34 in Oystersteel. Rolex lists a 34 mm case, 100 m water resistance, a sapphire crystal, and Superlative Chronometer certification. The watch runs at 28,800 vibrations per hour, which is 8 beats per second. It comes on an Oyster bracelet with an Oysterclasp and a 5 mm Easylink extension. Dial colors include silver, blue, black, and white. The bezel is smooth steel or fluted white gold. Rolex lists the Datejust 34 in Oystersteel in the low $7,000s in the US. Prices change on Rolex's schedule, not on a dealer's.
How Common Are Fake 124200 Watches
Fakes of the Datejust 34 are fewer than fakes of the Submariner and the Datejust 41. The 34 mm size sells in smaller numbers, so factories put less work into the case. A common problem: sellers list a 36 mm Datejust as a 124200. Measure the case across the 3 and 9 o'clock points, crown excluded. A real 124200 measures 34 mm.
Checks That Separate Real From Fake
- Case size: 34 mm, measured without the crown.
- Beat rate: 8 ticks per second. Fakes with a 21,600 vph movement tick 6 times per second.
- Cyclops: Rolex uses 2.5x magnification on the date. Many fakes run 1.5x to 2x, and the date window edges look thick.
- Engraving: the reference number sits on the case between the lugs at 12 o'clock. The serial sits at 6 o'clock.
- Crystal: a laser-etched coronet sits at 6 o'clock on the sapphire. It shows under 10x magnification.
- Bracelet: Oyster links with polished center links. End link fit is tight on the real watch, with gaps on most fakes.
Movement and Timekeeping
Rolex rates the 124200 at -2/+2 seconds per day after casing. Replica movements do not hold that rate. A timegrapher shows the spread. Many fakes drift 10 to 30 seconds per day, and beat error above 0.5 ms is common. Weight is a weak test. Bracelet length and link count change the number, so a scale does not settle the question.
Cost and Resale
A fake 124200 sells for $150 to $900, based on the factory and the seller. A real 124200 lists in the low $7,000s from Rolex, and used examples trade near that figure. Fakes hold little resale value. Rolex does not service counterfeits, and an independent watchmaker may decline the job because parts do not exist.
Legality in the US
Selling or trafficking in counterfeit goods is a federal crime under 18 U.S.C. § 2320. Penalties include prison time and fines. U.S. Customs and Border Protection seizes counterfeit shipments at ports of entry. Buying a fake for personal use is not the target of that statute, but the item can be seized and destroyed, and the money is gone. Selling a fake as genuine is fraud, and that charge carries its own penalties.
Bottom Line
If you want a 34 mm Datejust, the 124200 is the real reference. Fakes exist and the quality varies by seller. Check the case size, the beat rate, the Cyclops magnification, and the engraving between the lugs before you trust a listing. If a seller cannot show those four items, treat the watch as unknown.