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Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal: the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.
Grand Seiko is counterfeited far less than the Swiss names it competes with, and a 2026 titanium diver on a movement nobody else makes is not a practical fake target. The checks worth doing here are about the Spring Drive behaving correctly and the titanium being what it should be.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| dial | Seconds hand motion | A continuous, entirely smooth glide with no perceptible step at any magnification | Any stepping or stutter, which means the glide wheel is not running as a Spring Drive should |
| dial | Power reserve indicator against actual running | Indicator tracks toward full on winding and the watch runs roughly 72 hours from full | An indicator that sits at one end regardless of winding, or a reserve well short of 72 hours |
| case | Unidirectional bezel and its ceramic insert | Turns anticlockwise only, through 120 defined clicks, with the colour fired through the ceramic | Bidirectional rotation, a click count that does not reach 120, or a different colour showing at a chipped edge |
| crown | Screw-down crown against the 300m rating | Threads and seats cleanly; the diver rating depends on it entirely | Cross-threading or a crown that will not seat |
This watch on Grand Seiko’s site →
Closest by lug-to-lug, thickness and width, which is what decides how a watch sits, rather than by brand or price. Family members are excluded.
Drawn from the 651 of 790 references that have all three measurements recorded. Why the other 139 are missing.
Pre-purchase sheet → The numbers to check, what to look at and what to ask, on one printable page.
