A "fake Globemaster 40mm" is a replica marketed as an Omega Constellation Globemaster with a 40 mm case. The 40 mm figure is the first clue on its own. Omega catalogs the three hand Globemaster at 39 mm and the Annual Calendar version at 41 mm. There is no 40 mm Globemaster reference, so a listing that advertises one is describing a case built from a replica mold rather than from a factory specification.
Why the 40 mm Number Appears
Replica producers rarely have access to original tooling. They work from photographs, second hand cases, or generic 40 mm cases that are cheap to source in volume. Because 40 mm sells well across many brands, a maker can drop a Globemaster style dial into a stock case and still move inventory. The result is a watch that looks plausible in a phone photo and measures wrong on a caliper.
How to Inspect a Watch Sold as a 40 mm Globemaster
- Measure the case across the caseback side with digital calipers, excluding the crown.
- Weigh the watch on a kitchen scale and compare the figure to the published weight of the 39 mm reference.
- Examine the bezel under a bright light. Genuine bezels use tungsten carbide, which reads hard and mirror bright. Most replicas use polished steel or a plated alloy that shows a softer, warmer sheen.
- Look at the caseback engraving with a loupe. Genuine text is cut deep with crisp edges. Replica text is shallow, thin, or laser etched with rounded shoulders.
- Check the dial flange for the pie pan step. Replicas often flatten this step or soften the bend.
- Open the caseback and inspect the rotor finish. Genuine Omega rhodium plating sits on Geneva stripes with polished bevels. Replica rotors show brushed steel, uneven lettering, or a glued on medallion.
- Ask for the Master Chronometer certification card and match the eight digit movement number to the watch. Genuine cards are issued per movement. Replicas ship with blank or reused cards.
Legal and Practical Exposure
Counterfeit watches infringe registered trademarks. In the United States, trafficking in counterfeit goods is a federal offense under 18 U.S.C. 2320, and shipments are subject to seizure by U.S. Customs and Border Protection. A buyer can lose the watch and the money paid for it with no refund path.
The practical downsides stack up too. Replica movements rarely hold time to chronometer standard, gaskets are often untested, and no authorized service center will touch the watch. Resale value is close to zero because the watch cannot be authenticated or insured as a genuine piece. A 40 mm listing is a strong signal to walk away, and so is any seller who cannot produce matching papers.
What the Real Globemaster Is
The genuine Constellation Globemaster launched in 2015 as the first Omega certified as a Master Chronometer. Certification is granted by METAS after the fully cased watch passes eight tests, including exposure to 15,000 gauss and a precision run across ten days in six positions. The 39 mm case carries a fluted tungsten carbide bezel, a pie pan dial, and a domed sapphire crystal with anti reflective coating on both faces. Those details are documented and verifiable. Anything that does not match them, including an advertised 40 mm diameter, is a replica.