Some specifications for this reference are on file; the record is incomplete.
Seiko · Prospex
62MAS
Ref. 6217-8001 — “62MAS”
discontinuedSecond series, large crownPartially documentedLast reviewed Not yet reviewed
Known Variants
Classification
FactoryDocumented as shipped from the factory for this reference and period.PeriodNot original to this watch, but correct for its production period.ServiceFitted by the manufacturer's own service network. Not a defect.AftermarketThird-party part. Affects originality, not authenticity.ModifiedGenuine parts in a configuration the factory did not sell. Affects originality and value, not authenticity.CounterfeitDeceptive reproduction intended to pass as genuine.UnknownEvidence on file does not settle the question.Dial
FactoryProof wording
Earlier dials use 'Proof' depth wording, paired with a correspondingly marked caseback.
Probable
Dial
FactoryResist wording
Later dials use 'Resist'. The change is part of the industry-wide move away from unqualified waterproof claims and is a useful era check when the caseback wording agrees with it.
Probable
Component compatibility
What this reference is documented to have carried, and in what capacity. A service part is the manufacturer's own work; only a counterfeit classification is a finding against the watch.
Documented calibers
1965–1968