Short answer
"Globemaster 1865" is not an Omega reference number. Omega references for the Globemaster use eight digits plus a material code, for example 130.33.39.21.03.001. The 1865 in a listing comes from the seller. It can be a stock code, a year, or a number copied off a replica case back. Judge the watch on parts you can measure, not on the number in the title.
What the real Globemaster is
Omega revived the Globemaster name in 2015. The case measures 39 mm across. Lug width is 20 mm. The bezel is tungsten carbide, a hard alloy that holds a fluted finish and resists scratches. The dial copies the 1952 Constellation pie pan shape, with a raised center and a sloped outer ring. Crystal is sapphire. Water resistance is rated at 150 m.
The movement is caliber 8900 or 8901 in the date version. Rate is 25,200 vph, or 3.5 Hz. Power reserve is 60 hours. The Globemaster was the first watch certified as a Master Chronometer by METAS. That test exposes the watch to 15,000 gauss, then checks rate in six positions with a tolerance of 0 to +5 seconds per day.
Why sellers use 1865
- Catalog codes: shops number their own stock. 1865 is often a shelf number, not a factory reference.
- Year claims: 1865 has no link to Omega. The company dates to 1848. The Constellation dates to 1952. The Globemaster name dates to 1952.
- Case back stamps: some replicas carry scan codes or batch numbers. A buyer may read one as a model number.
Checks before you pay
- Case: 39 mm wide, 20 mm lugs. Measure with calipers.
- Bezel: tungsten carbide on the real piece. Replicas use steel or coated brass. A magnet will not tell you. Weight and scratch marks will.
- Dial: pie pan profile, applied Omega symbol, framed date window at 3 o'clock.
- Movement beat: 25,200 vph on a real 8900. Many copies run at 28,800 vph (Miyota 9015) or 21,600 vph.
- Water resistance: gaskets on copies are not tested to 150 m. Do not swim with one.
Price bands
Entry copies sell for $60 to $120. Mid tier runs $150 to $300. The top tier, sold as super clone, runs $300 to $500. Above $500, ask for a timing report and photos of the movement under the case back.
Legal note
In the United States, 18 U.S.C. 2320 covers trafficking in counterfeit goods. US Customs can seize shipments that carry a counterfeit mark. Personal import is subject to the same seizure rules as resale. Data on seizure rates for single watches is not public.