A fake Speedmaster 38 shows up in three forms: a 42 mm Professional case sold as 38 mm, a 38 mm case with a quartz or Valjoux 7750 clone movement, and a real case fitted with wrong parts. The checks below cover the reference number, the case size, the movement, the dial print and the price.
Confirm the reference and serial number
Omega catalogs the 38 mm Speedmaster under references that begin with 324. The full number has 14 digits and encodes case material, dial color and bracelet. The steel black dial version is 324.30.38.50.01.001.
The serial number has 8 digits. It is etched on the outside of the caseback near a lug, and it repeats on the movement. The warranty card carries the same serial and the same reference. Copies often carry a 42 mm number such as 311.30.42, or a number that appears in no Omega catalog.
Measure the case
- Diameter: 38 mm, measured across the case at 3 and 9, not across the crown or pushers.
- Water resistance: 100 m, printed on the caseback.
- Crystals: sapphire front and back.
- Layout: crown at 3, chronograph pushers at 2 and 4.
Copies often come out at 39 mm to 42 mm, or use the 20 mm lug width of a Speedmaster Professional. The 38 mm case uses a narrower lug. Calipers settle the question in under a minute.
Open the caseback
The original runs the Omega Co-Axial calibre 3330: automatic, chronograph, Co-Axial escapement, Si14 silicon balance spring, 52 hours of power reserve, 28,800 vibrations per hour. The rotor is engraved with OMEGA and the calibre number, and the bridges carry decorative finish.
A quartz copy shows a chronograph seconds hand that ticks in one-second steps, and no balance wheel behind the window. A 7750 clone shows a balance wheel, but the rotor engraving, the jewel count and the finish differ from the Omega specification. Compare the movement against photos of the 3330 in Omega service documents.
Dial, hands and printing
The Speedmaster 38 has three subdials and a date window at 3. Dial text reads OMEGA at 12, SPEEDMASTER below it, and the Co-Axial Chronometer line above the 6 o'clock subdial. Letters are thin and level on the original. Copy dials show thick text, uneven spacing, misaligned subdial rings and hands without polished bevels.
Print quality on a photo is not proof. Compare the dial to Omega's product image for the exact reference, because dial text changes between the steel, two-tone and gem-set versions.
Bracelet, caseback and packaging
The clasp is stamped with the Omega logo and the material. Shallow or missing stamping is a warning sign. End links meet the case with no gap, and the bracelet has no rough edges on the underside. Boxes and cards are easy to copy, so packaging carries little weight on its own. Look at the engraving around the caseback window and compare it to Omega's photos of the same reference.
Price and paperwork
Steel Speedmaster 38 models were listed at roughly $5,400 to $6,200 by Omega in recent years. Used steel examples trade around $2,500 to $3,500 at dealers and auctions. A sealed watch at half of market price is a risk, not a bargain.
Omega warranty runs five years on watches sold since 2018. The card should show the matching serial, an authorized dealer stamp and a date inside that window. The 3330 is a Co-Axial chronometer. METAS Master Chronometer certification applies to other Speedmaster movements, so check the calibre for the reference before you treat a METAS card as proof.
Verification that settles it
- An Omega boutique or service center checks the serial against the reference.
- A watchmaker with an account opens the caseback and reads the calibre and the serial on the movement.
- A timegrapher test confirms the rate and amplitude against the 3330 specification.
No single photo check proves authenticity. The serial, the case measurement and the movement together do.