Knowledge Center

Professional Authentication Platform

Some specifications for this reference are on file; the record is incomplete.

Seiko · Prospex

Tuna

Ref. 6159-7010 — “Grandfather Tuna

discontinuedFirst-generation professional 600mPartially documentedLast reviewed Not yet reviewed

Shroud

Replacement and reproduction shrouds

Medium

What to inspect

The shroud is a sacrificial part — it exists to be damaged instead of the case — so replacements are both legitimate and common, and reproductions exist. Check the finish, the fit against the case and the fastener type. A replaced shroud is expected on a working professional watch; presenting one as wholly original is the misrepresentation.

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