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Movement holder

DS shock-absorbing movement mount

Probable

The component at the heart of the DS concept: a resilient mount carrying the movement within the case so that shocks to the case are not transmitted directly to the movement. Covered by Swiss patent 346825, registered 8 May 1958 by the case manufacturer Huguenin Frères rather than by Certina itself.

Part reference

Brand
Certina
Maker
Huguenin Frères (case manufacturer)
Introduced
1959

Documented variations

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.

  • Shock mount present, consistent with a turtle-marked caseback

    FactoryProbable

    Whole production

    The construction the turtle asserts. Movement carried on a resilient mount rather than seated directly, with the thickened crystal and gasketing that complete the specification.

  • Turtle-marked caseback with no DS construction behind it

    UnknownProbable

    Whole production

    The caseback claims a construction the watch does not have. Points at the caseback first — they are replaceable, and a DS back fitted to a non-DS watch is more likely than a factory error. Record it as an inconsistency to be resolved, not immediately as a counterfeit.

  • Mount replaced with a conventional movement ring at service

    ServiceProbable

    Whole production

    Where the original resilient components perished and were unavailable, a watchmaker may have fitted a plain movement ring. The watch runs correctly and no longer has the DS property the turtle claims. A service finding affecting originality and the stated specification alike.

Documented on these references

Provenance of this record

Sources & Evidence

Primary sourceTechnical documentation

Swiss patent 346825 — shock mount for a watch movement, registered 8 May 1958

Swiss patent office; applicant Huguenin Frères

Accessed
2026-08-19

Cited for

This referenceHigh confidence
Secondary sourceCollector research

Certina collector research on the DS lines, the turtle emblem and vintage references

Specialist Certina collector resources and communities

Accessed
2026-08-19

Cited for

This referenceProbable

Last verified: Not yet reviewed