Some specifications for this reference are on file; the record is incomplete.
Seiko · Prospex
Tuna
Ref. 7549-7009 — “Golden Tuna”
discontinuedFirst quartz professional 600mPartially documentedLast reviewed Not yet reviewed
Authentication Notes
Case
LowProbable
Coating wear is expected; a flawless shroud suggests replacement
Titanium nitride is hard but not indestructible, and a working example will show wear at the shroud edges. A 7549 with a uniformly perfect gold shroud has most likely had it replaced or re-coated. Neither is a counterfeit finding on its own; both are originality findings that should be recorded rather than admired.
Inspection points
No inspection checklist has been published for this reference.