The short answer

Reference 424.10.34 is an Omega De Ville Prestige. In Omega's reference system the digits that follow the material code give the case diameter, so this is a 34mm steel dress watch, and most examples in this reference family run on quartz. The design is plain, the case is small, and that combination makes it easy to copy. A fake 424.10.34 is built on a Chinese case sized close to the original, fitted with a stamped case back carrying the reference number, and powered by a generic quartz module or a low-grade automatic. The engraved reference on the back proves nothing. Anyone can stamp four numbers into a case back.

Why this reference gets faked

De Ville replicas do not get the attention that Submariner replicas get, and you can see the difference in the hand. A replica Submariner might arrive with a cloned movement and a bezel insert that is close to right. A replica De Ville gets a thinner budget. That works in your favor, because the tells are easier to find.

Price is the other reason. A genuine 34mm De Ville Prestige quartz sells new for a few thousand dollars and used for well under that, depending on condition, box and papers. Replicas move for $80 to $300. When someone asks $450 for a watch with no box and a vague story about a gift, the number is doing the talking.

The tells I check first

Case back

Genuine Omega case backs are engraved, and the engraving sits in a clean recess with crisp edges. On replicas the reference number often shows the wrong font weight, uneven spacing, or a frosted finish where it should be polished. A real De Ville Prestige case back also carries the model name, the water resistance rating, and a serial that matches the paperwork.

Dial and printing

Put a loupe on the word OMEGA and the De Ville script under the hands. Replica dials print these a touch thick, and the letterforms lose their edge at the thin strokes. Applied indices are the next giveaway. Real ones sit flat against the dial and reflect cleanly; copies sit high, throw a shadow, and the polish looks cloudy.

Hands and crown

Dauphine hands on the genuine watch are faceted with a sharp crease down the center. Copies are stamped, and the facet looks soft or wanders off line. A genuine crown is signed and turns with a defined feel. Replica crowns are often unsigned, or the mark is too shallow to read at arm's length.

Bracelet and end links

The fit between the end link and the case is where cheap cases show themselves. On a real De Ville Prestige the link meets the lugs with almost no gap and no rattle. Copies leave a visible seam, and the clasp engraving is shallow and slightly blurred.

Movement

If the watch has a display back, look at the finishing and the calibre marking. If it does not, watch the seconds hand. A quartz 424.10.34 ticks once per second. A sweeping hand on a watch sold as this reference means the seller is describing a different watch, or the movement is not what they claim.

A quick checklist

  • Does the seller quote the full reference, including the suffix digits after 424.10.34?
  • Do the serial on the case back and the serial on the card match, character for character?
  • Is the case diameter actually 34mm, measured across the case with the crown excluded?
  • Does the seconds hand tick once per second, matching a quartz movement?
  • Is the crystal flush with the bezel, or does it sit proud with a visible lip?
  • Are the lugs drilled or solid, and do they match photos of the genuine reference?

Papers, serials, and the legal side

A replica with a full set of fake papers is still a replica, and the paperwork usually gives it away faster than the watch. Genuine Omega cards have a specific finish and print quality. Copies use flat cardboard and ink that smears.

There is also the practical cost of owning one. Counterfeit watches are illegal to sell in the United States and across most of the European Union, and customs agencies seize them in transit. Omega will not service a counterfeit, and no independent watchmaker will touch a Chinese quartz module that costs less than the shipping. Resale value is close to zero. If you want the look of a De Ville without the risk, a used genuine quartz model or a clean microbrand dress watch will hold value and keep running.

For anything you are about to buy, confirm the reference against Omega's own product data, compare dial photos at high magnification, and treat any price far below the used market as the answer to the question you were asking.