No Omega Seamaster 300 existed in 1948. Omega started the Seamaster line that year with a dress watch. The dive watch named Seamaster 300 came in 1957. Search listings merge the two names, so one phrase points at three different watches. Confirm which watch a seller means before you compare prices.
The 1948 Seamaster
Omega released the Seamaster in 1948 as a civilian watch with a water-resistant case. It had a small case, a plain dial and a leather strap. It was not a dive watch and it carried no rotating bezel. Original examples are reference CK 2518. Few replicas of this watch exist because demand is small and the case shape is hard to copy at low cost.
The 1957 Seamaster 300
The Seamaster 300 launched in 1957 as reference CK 2913. It had a black dial, broad arrow hands, a rotating dive bezel and a case near 38 mm. Omega reissued the design in 2017 as a 39 mm steel watch with a Master Co-Axial movement. Most replica Seamaster 300 listings copy this 39 mm reissue or the 41 mm modern Seamaster 300.
The 2018 Seamaster 1948 Limited Edition
Omega marked the 70th anniversary in 2018 with two 38 mm steel watches, each capped at 1,948 pieces. One has small seconds at 6 o'clock and calibre 8804. The other has central seconds and calibre 8805. Both carry a Master Chronometer certificate. This pair is the closest match to the phrase "Seamaster 1948," and it is the model a buyer should picture when the listing uses that year.
What replica listings show
Replica stock for the 1948 anniversary pair is thin. Factory codes that appear on Omega replica listings, such as VSF, ORF and OMF, focus on the Seamaster 300 and the Diver 300M. Treat any "1948" listing with no factory name as unknown origin. Typical prices for a replica Seamaster 300 run from about 250 to 450 US dollars, with clone movements priced above that band.
Checks before payment
- Case width: 38 mm for the 1948 pair, 39 mm for the 1957 reissue, 41 mm for the modern Seamaster 300.
- Seconds: small subdial at 6 o'clock only on the 8804 version. Central seconds means the 8805 version.
- Beat rate: 25,200 vibrations per hour for the 8800 family. A 28,800 rate points to a substitute movement.
- Dial print: the word Seamaster sits above the centre on the 1948 pair, with no depth rating line.
- Caseback: ask for a photo. Engraving depth and font are the parts that fail first.
- Lume: the 1948 pair has no dive bezel, so any pip or triangle on the bezel is a mismatch.
Unknown points
No public record confirms which factory, if any, makes a case-accurate 1948 anniversary replica. Ask the seller for the factory name and a movement photo. If either is missing, the answer is unknown.