A Rolex 279160 super clone is a replica of the 28 mm Datejust in Oystersteel with a domed bezel and an Oyster bracelet. The build worth your money matches five checkpoints: a 28 mm case, a case thickness close to the genuine, 2.5x cyclops magnification over the date, a clone 2236 movement with a long power reserve, and a solid bracelet with a working Easylink. If any of those five miss, you are looking at a mid tier watch with a premium price tag. The steps below walk you through the checks in the order a buyer should run them.

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Prerequisites

  • Digital calipers, 0.01 mm resolution
  • 10x loupe
  • Gram scale
  • Timegrapher or a phone timing app
  • Daylight photos of the actual watch from the seller
  • Published specs for the 279160 to compare against

Know the reference first

You cannot grade a clone without the baseline. The 279160 is the Datejust 28 in Oystersteel: 28 mm case, smooth domed bezel, Oyster bracelet with Oysterclasp and Easylink, sapphire crystal with a Cyclops lens, date at 3 o'clock, and caliber 2236 inside with a 55 hour power reserve. Write those numbers down before you open a single listing photo.

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Measure the case

  1. Place the calipers across the bezel at 3 and 9 o'clock and record the width. It should land within a few hundredths of a millimeter of 28 mm.
  2. Measure from the caseback to the top of the crystal. Note the figure and compare it to the spec sheet; a case that reads too thick usually means a spacer was added to fit a larger movement.
  3. Measure lug width on both sides. The two figures should match each other and the bracelet end links.
  4. Run a finger over the domed bezel. It should read as one continuous polished curve with no step where the bezel meets the case.
  5. Check the crown position and the crown logo under the loupe. The coronet should sit centered, not tilted.

Inspect the dial, hands, and date

  1. Loupe the dial text. Letters should be sharp at the edges and spaced evenly, with no ink bleed.
  2. Look at the date aperture. The cut should be clean at all four corners with no white ring showing around the disk.
  3. Check the Cyclops. The date should fill the lens at about 2.5x and stay readable from an angle; weak magnification is the most common flaw on a 28 mm replica.
  4. Study the rehaut engraving. Depth should be even around the dial and the coronet at 12 should line up with the marker above it.
  5. Compare hand length to the minute track. Hands that stop short of the markers are a giveaway.

Verify the movement

  1. Ask the seller for the movement name and a clear photo of the movement through the caseback or with the back removed.
  2. Wind the crown about 40 turns and feel for grit. Winding should be smooth with light resistance.
  3. Pull the crown to the setting position and cycle the hands through a full 24 hours. The date should flip clean at midnight.
  4. Run the watch on a timegrapher. Look for a rate inside plus or minus 10 seconds per day, amplitude between 250 and 300 degrees, and beat error under 0.5 ms.
  5. Let it run untouched and confirm the reserve reaches at least 40 hours. A movement that dies overnight is not a 2236 clone.

Test the bracelet and clasp

  1. Hold the watch by the case and let the bracelet hang. Solid links stay straight; hollow links fold and rattle.
  2. Flex every link by hand and listen for looseness at the pins.
  3. Open and close the clasp ten times. The coronet stamp should be crisp and the closure should snap, not drag.
  4. Deploy the Easylink and confirm the 5 mm extension moves without binding.
  5. Unscrew two removable links and inspect the threads. Clean threads mean the bracelet was machined, not cast.

Weigh it and read the finish

  1. Weigh the watch on a gram scale and compare the figure to the published weight for the same configuration. A light watch points to 316L steel instead of 904L.
  2. Turn the case under a desk lamp at a low angle. Brushed surfaces should show a single direction of grain with no swirl marks.
  3. Check the transition between brushed lugs and polished case flanks. The line should be sharp and straight.

Ask the seller five questions

  1. Which factory built it, and what version number is the batch?
  2. Which movement is inside, and what is the stated power reserve?
  3. Which steel grade is the case?
  4. Can you send dated photos of this exact unit, not stock images?
  5. What is the return window if the watch fails a caliper or timegrapher check?

Reject the watch if the case measures under 27.8 mm, if the Cyclops magnifies less than 2x, if the date sits off center in the window, or if the seller cannot name the movement. Those four failures cost more to fix than the watch is worth.

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