The 5th generation fake Speedmaster 1957 is a replica of the 2017 Omega 1957 Trilogy Speedmaster, sold as an updated build that fixes dial printing, bezel lettering, and caseback engraving problems from earlier replica runs. Sellers use "5th gen" as a marketing label, not an official standard, so two watches sold under that name can differ in case size, crystal material, and movement. Treat the label as a starting point and check each detail against Omega's published reference data.
What the label covers
The 1957 Trilogy Speedmaster is a 38.6 mm steel watch with calibre 1861, a broad arrow hour hand, straight lugs, no crown guards, and a solid caseback with the Seahorse medallion. A replica qualifies as a later build when it copies those proportions and the vintage dial layout instead of the modern Speedmaster Professional case. Replica makers release running changes the way factories release phone revisions, so generation numbers reset whenever a new case supplier is used.
Prerequisites
- Calipers or a caliper app for case and lug measurements
- A 10x loupe
- A phone with a macro mode or a close focus setting
- A timegrapher photo or a short chronograph timing video from the seller
- Omega's spec sheet for the 1957 Trilogy Speedmaster open on a second screen
How to evaluate a 5th generation 1957 replica
- Ask the seller for photos at fixed angles: straight on, profile, caseback, dial macro, and clasp.
- Measure the case across the middle without the crown. The genuine figure is 38.6 mm. Anything at 39 mm or wider uses a different case source.
- Study the lugs. The 1957 case has straight lugs and no crown guards. Rounded lugs or a guard point to a Speedmaster Professional case instead.
- Read the dial under the loupe. Look for the applied Omega logo, the position of the Speedmaster wordmark, and the split Swiss Made at the bottom.
- Check the hands. The hour hand is a broad arrow with a flat triangle tip. A wide arrow, a rounded tip, or a printed arrow is a lower build.
- Turn the bezel and read the tachymeter scale. Numerals should be even and sharp, with no filled-in gaps between the markers.
- Inspect the caseback engraving. The Seahorse medallion and the text should cut deep into the steel. Shallow, faint, or laser-etched marks are common on replicas.
- Request a movement photo with the back off. Genuine watches run the hand wound Omega 1861 at 21,600 vibrations per hour. Seagull ST19 and 7750 clone movements show a different bridge layout and beat rate.
- Weigh the head. Solid steel feels dense in the hand, while plated alloy copies read light on a kitchen scale.
Changes that show up in later builds
Later replica runs of the 1957 tend to improve three areas. Dial printing gets sharper and the subdial rings move closer to correct spacing. Bezel inserts lose the heavy paint fill and pick up a brushed steel finish. Caseback engraving becomes deeper, which is the change most sellers advertise. Crystal upgrades to sapphire or a closer hesalite copy also appear in later batches, and those swaps change the total thickness.
Flaws that survive
- Crown and pusher profile: genuine pushers are slimmer and sit closer to the case band
- Chronograph reset: many replicas snap back with a small jump instead of a clean stop
- Lume color: genuine vintage-style lume is warm and slightly uneven, replicas often run too green or too flat
- Bracelet end links: gaps at the lug line and loose spring bars
- Serial and reference stamping on the caseback and documentation that does not match Omega records
Verifying a real one
No photo checklist replaces a hands-on inspection. Omega boutiques and independent watchmakers can open the case, read the movement, and confirm the reference and serial against factory records. If a seller refuses an inspection or a movement shot, that refusal is the answer.
Note: selling counterfeit watches is illegal in the United States and in most other markets, and customs agencies can seize shipments. Buy and inspect with that risk in mind.