The reference 323.10.44 is Omega's 44.25 mm co-axial Speedmaster Moonwatch chronograph on a steel bracelet, and a replica of it should match three numbers above all others: a 44.25 mm case diameter, a two-register dial with the date at 6 o'clock, and roughly a 16.5 mm thickness. Anything smaller than 43 mm or wider than 45 mm is a different watch wearing this reference number. Knowing those three figures lets you grade any replica 323.10.44 in under a minute.
What defines the Speedmaster 323.10.44 reference?
This is the larger, date-equipped branch of the Moonwatch family, not the 42 mm professional model most people picture. It runs a two-counter chronograph layout instead of the classic three-register arrangement, which is the fastest visual tell. The stainless steel bracelet is a three-link design with polished center links and a folding clasp.
Specifications to compare against a replica
- Case diameter: 44.25 mm
- Case thickness: about 16.5 mm
- Lug width: 21 mm
- Dial layout: chronograph subdials at 3 and 9, date window at 6
- Crystal: sapphire front and display back
- Water resistance: 100 m on the genuine reference
- Movement type: automatic chronograph with co-axial escapement
Why this reference is hard to replicate well
The case is thick and the bezel is a polished steel ring with a black aluminum insert, so any wobble in the machining shows immediately in reflected light. Subdial spacing is the second problem, because a stock automatic chronograph movement rarely lines up with the original positions. A replica that gets the case right but drifts on subdial placement reads as wrong from arm's length.
Case and profile checks
Measure the case with calipers before anything else, because photos flatter proportions. The lugs should curve downward with a visible bevel, and the crown guards should not swallow the crown. Thickness matters as much as width on this reference, since a thin case on a 44 mm watch looks flat and cheap.
Dial, subdials and date window
The date should sit at 6 o'clock inside a cleanly cut aperture with no ragged edges or misaligned numerals. Subdials at 3 and 9 need even spacing from the center pinion and from the outer track. Printed text should be crisp at magnification, with the wordmark and the speedmaster line sitting on the same baseline.
Movement options in replica form
Most replicas in this size run a modified automatic chronograph, typically a Seagull or a Japanese-derived chronograph base. Higher tiers add a decorated rotor and a display back that mimics the original bridge shapes. Ask which movement is fitted before you buy, because the movement drives both the thickness and the service life.
Quality tiers and price expectations
Entry replicas at this size usually cut corners on the bracelet and the crystal, using mineral glass and hollow end links. Mid tiers fix the crystal and the clasp but often miss subdial spacing. Top tiers match the case profile, the sapphire, the bracelet taper and the dial printing, and they cost several times more.
Frequently asked questions
Does a good replica 323.10.44 use the real 44.25 mm case size?
Yes, the better examples hold within a few tenths of a millimeter of 44.25 mm. Ask the seller for caliper photos rather than trusting a listing title.
Is the date window position correct on replicas?
On accurate versions it sits at 6 o'clock, matching the original. A date at 3 o'clock means the builder used a different movement and a different dial.
How much should a replica Speedmaster 323.10.44 cost?
Expect budget tiers well under a hundred dollars and top tiers in the low hundreds. Price alone does not prove quality, so compare specifications line by line.
Can a watchmaker tell it is a replica?
A watchmaker opening the case back will identify the movement within seconds. From the outside, only the subdial spacing, crystal clarity and bracelet finishing give it away.
What should I check first after delivery?
Confirm the case diameter with calipers, then test the chronograph start, stop and reset. Finally check the bracelet screws and the clasp tension before wearing it daily.