What the Mimic Speedster 1957 5th gen actually is
It is a fifth iteration of a replica built to look like the 1957 Omega Speedmaster CK2915, the reference that launched the Speedmaster line. "Speedster 1957" is the workaround name, "Mimic" is the maker or seller label, and "5th gen" is the version number that seller is using. The watch it copies is the broad-arrow, no-crown-guard chronograph with a steel base-1000 bezel, so the whole appeal comes down to how well the case, dial and bezel match a 1957 original.
Duplicate Speedster 1957 5th Gen: The Ultimate Guide
Treat the generation number as a claim, not a specification. Every seller numbers runs differently, and a 5th gen from one source can be identical to a 3rd gen from another. What matters is the individual watch in the photos.
Top Pick: FakeSpeedster 1957 5th Gen Replica Watch
What tends to change by the fifth run
Replica generations move in small increments. Across the runs described as gen 4 and gen 5, the changes cluster in the same places:
duplicate speedster 1957 5th gen
- Case: earlier versions ran closer to 40mm and too thick. Later runs sit nearer 39mm with a thinner midcase and a lug curve that matches the original better.
- Dial: a stepped outer chapter ring, thinner subdial rings, and cleaner printing on the dial text and the logo, applied or printed depending on which dial variant is being copied.
- Bezel: a base-1000 insert with the correct dot over 90, tighter numerals, and a less glossy finish than the first runs.
- Hands: a reshaped broad arrow hour hand, a narrower alpha minute hand, and a chronograph seconds hand of the right length.
- Crystal: domed sapphire with inner anti-reflective coating is common on later runs. The 1957 original was acrylic, so this is a trade rather than an upgrade if accuracy is your priority.
Specs to verify before you pay
- Case diameter around 39mm and thickness under about 14mm on the wrist.
- Lug width around 19mm, which is what the early Speedmaster case used.
- No date window. The original has none, and a date at 3 or 4:30 is a donor-movement tell.
- Chronograph layout: running seconds at 9, chronograph minutes at 3, centre chrono seconds.
- Hand-wound column-wheel chronograph movement in the Seagull ST19 family, 21,600 vph, roughly 40 hours of reserve.
QC checklist for the actual watch
- Ask for a short video, not only stills. Start, stop and reset the chronograph on camera.
- Confirm the chrono seconds hand snaps back to 12 and stays there.
- Check that both subdial hands zero correctly.
- Ask for a timegrapher photo. Anything inside about minus 10 to plus 15 seconds a day is normal for an adjusted ST19.
- Look at bezel alignment against the dial at 12.
- Judge the lume tone. Faux patina that reads bright orange is the most common miss.
- Check the crown size and the pusher shape. Both are frequently oversized.
- Ask about the caseback: plain, engraved, or with a Seahorse medallion. They are not interchangeable across generations.
- Confirm the spring bars and the strap or bracelet hardware before shipping.
How it wears and what it costs to own
The ST19 is a Venus 175 derivative, so it is a column-wheel chronograph with a pusher feel closer to the real thing than a cam-and-lever budget movement. It is also easy to service and parts are plentiful, which matters more than the spec sheet on a watch you plan to wear. Expect the pushers to feel lighter than a serviced Calibre 321 and the winding to be a little rougher.
Servicing is cheap compared with any vintage chronograph. A local watchmaker can regulate or clean an ST19 without hunting for unobtainable parts, though not every shop will work on a replica, so ask before you buy.
Where these usually get caught out
Subdial spacing is the structural giveaway. The ST19 geometry does not match the Lemania-based 321 layout exactly, so the subdials sit slightly differently relative to the centre. No dial upgrade fixes that. After that, look at the depth of the caseback engraving, the finish on the bezel insert edges, and the printing weight on the dial text. Those are the spots where a fifth run still shows its hand.
Buying safely and the legal side
Buy from a seller with a public history, a return window, and photos or video of the exact watch. Prices move with generation claims, so compare several listings before committing, and be sceptical of anyone selling a "5th gen" with no QC images.
One thing to keep in mind: this is not an Omega and it carries no manufacturer warranty or service. In the United States, trafficking in counterfeit goods is illegal, and shipments can be seized by Customs and Border Protection. That risk sits with the buyer, so weigh it before you order.