What 322.10.42 identifies

322.10.42 is part of an Omega reference string. It sits in the Seamaster Aqua Terra 150M line. The digits 10 mean a stainless steel case. The digits 42 are the case diameter code for a 41.5 mm case. A replica listing that shows 322.10.42 alone, with no further digits, is quoting half a reference.

How Omega builds the full number

  • First group: collection and case family. 231 and 322 both appear on Aqua Terra 150M references.
  • Second group: case material. 10 is stainless steel, 13 is steel with gold, 20 is gold.
  • Third group: case diameter code. 42 equals 41.5 mm. 39 equals 38.5 mm. 43 equals 43 mm.
  • Fourth group: movement code.
  • Fifth group: dial code.
  • Sixth group: bracelet or strap code.

A complete reference runs 14 digits with dots, for example 322.10.42.50.01.001. The last six digits change the movement, the dial, and the bracelet. Two watches can share 322.10.42 and differ in all three.

Genuine specifications for this case family

  • Case: stainless steel, 41.5 mm across, screw-in crown at 3 o'clock.
  • Water resistance: 150 m, tested to ISO 22810 conditions.
  • Crystal: domed sapphire with anti-reflective coating on both faces.
  • Caseback: sapphire display on steel versions.
  • Bracelet: steel, integrated end links, push-button clasp.
  • Movement: Co-Axial automatic. The 8500 family covers the 41.5 mm steel models. Later references carry Master Chronometer certification from METAS.

What changes on a replica

Replica sellers use the reference number as a search key. The case size and the dial print on a first copy can look close in photos. The parts that differ are the movement, the bracelet finishing, the crystal coating, and the crown action. Most first copy Aqua Terra watches run a Chinese automatic movement. Some sellers name a Miyota 8215 or an ETA 2824 clone. Ask for the movement name in writing.

Checks before you buy

  1. Get the full reference, all digits, not the short code.
  2. Ask for the case diameter and the movement name.
  3. Ask for photos of the caseback, the clasp, and the crown under light.
  4. Ask for the return window in writing.
  5. Treat a 150 m water resistance claim as untested. A replica has no pressure test record.
  6. Compare the price across sellers. A large gap points to a different movement or a plated case.

Legal position in the United States

Counterfeit watches are illegal to import and to sell in the US. 18 U.S.C. 2320 covers trafficking in counterfeit goods. US Customs and Border Protection can seize shipments and assess penalties. A replica carries no Omega warranty, no service history at an authorized center, and no resale channel at the price paid.

Value note

Genuine 322.10.42 steel Aqua Terra watches trade on the used market, and prices depend on the full reference. On a replica, the price tracks the movement and the bracelet. The dial print adds little.