Knowledge Center

Professional Authentication Platform

Log InRegister

Strap

Aquanaut composite strap

High confidence

The Aquanaut's strap is a moulded composite carrying an embossed pattern that echoes the dial's, shaped to continue the case lines at the lugs. Patek describes it as highly resistant to salt water, wear and ultraviolet light, which is what distinguishes it from an ordinary rubber strap.

Part reference

Brand
Patek Philippe
Material
Patek's own composite elastomer
Introduced
1997
Identifying marks
The embossed pattern registers with the dial's and runs true; the strap meets the case with no gap and no step. The buckle or deployant is signed and finished to case standard. Aftermarket composite straps for the model are widely sold and are generally softer, with a less crisply moulded pattern.

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.

  • Aftermarket strap

    AftermarketProbable

    Whole production

    Straps are consumable and are replaced routinely, including with third-party composites. A configuration and value observation of low significance; it is not evidence against the watch, and treating a replaced strap as suspicious on a thirty-year-old watch would be unreasonable.

Documented on these references

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

Patek Philippe — collection, caliber and Patek Philippe Seal documentation

Patek Philippe SA

Accessed
2026-08-18

Cited for

This referenceHigh confidence
View source ↗

Last verified: Not yet reviewed