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Catalog / Watch Cases / Gerald Genta / GERALD GENTA – Gefica – GBS.Y.98 – Bronze and Titanium Case

No. 659 GERALD GENTA – Gefica –  GBS.Y.98 – Bronze and Titanium Case

Specimen No. 659 · Watch Cases · Gerald Genta

GERALD GENTA – Gefica – GBS.Y.98 – Bronze and Titanium Case

This is an original Gerald Genta watch case for the Gefica GBS.Y.98 reference. The full case kit in bronze and titanium is unused and includes the crystal, bezel, crown, and screw-down case-back.

Ref.
GGGGBSY98WC
House
Gerald Genta
Category
Watch Cases
Stock
2 specimens
CHF 500 Single piece · ships from Geneva
Enquire about this specimen Trade enquiry · net pricing on application
No. 02 / Plates

Every angle, plated.

No. 659·2 Plate 2 / 8
No. 659·3 Plate 3 / 8
No. 659·4 Plate 4 / 8
No. 659·5 Plate 5 / 8
No. 659·6 Plate 6 / 8
No. 659·7 Plate 7 / 8
No. 659·8 Plate 8 / 8

GERALD GENTA Gefica GBS.Y.98 Bronze and Titanium Watch Case

Overview

GERALD GENTA was a Swiss watchmaker renowned for designing iconic timepieces, including the Royal Oak for Audemars Piguet and the Nautilus for Patek Philippe. The Gefica series, introduced in the late 1990s, was part of GERALD GENTA's independent collections, characterized by bold designs and high-end materials. This is an original GERALD GENTA Gefica watch case in bronze and titanium, designed for professional servicing or restoration.

The case is made from solid bronze with titanium elements, measuring approximately 46.5 mm in diameter. The bronze will develop a natural patina over time, resulting in unique color variations and darker spots. The case includes the crystal, bezel, crown, and screw-down case-back. No screws are provided. The case is unused and graded Excellent in our Condition Grading Scale below.

This is a full case kit intended for watchmakers and collectors requiring authentic replacement parts. The case-back is screw-down, ensuring water resistance to 10 ATM (100 meters). The GERALD GENTA logo, material markings, and reference number are engraved on the case-back.

Specifications

Official reference number: GBS.Y.98. Case diameter: 46.5 mm. Case material: bronze with titanium components. Case-back: screw-down, titanium. Water resistance: 10 ATM (100 meters).

Markings on the case-back: GERALD GENTA logo, Bronze | Titanium | 10 ATM | GBS.Y.98 | (serial number)

Included components: full case, crystal, bezel, crown, and case-back. Excluded: screws. The bronze will patinate naturally, creating a distinct appearance over time. The case is unused, with no signs of wear or prior installation.

Notes

This is an original GERALD GENTA Gefica case in bronze and titanium, designed for professional use in watch servicing or restoration.

Frequently Asked Questions

Is this case compatible with all GERALD GENTA Gefica models?

This case is designed for the GERALD GENTA Gefica reference GBS.Y.98. Compatibility with other Gefica references is not guaranteed.

What is the condition of the case?

The case is unused and graded Excellent in our Condition Grading Scale below. The bronze will develop a patina over time, which is a natural characteristic of the material.

Are screws included with the case?

No screws are included. The case kit consists of the case, crystal, bezel, crown, and case-back only.

What is the water resistance rating of this case?

The case is rated for 10 ATM (100 meters) water resistance, as indicated by the engraving on the case-back.

Will the bronze patina affect the functionality of the case?

The patina is purely aesthetic and does not impact the structural integrity or functionality of the case. It is a natural oxidation process that occurs with bronze over time.

No. 03 / On record

Reference GGGGBSY98WC chronoshop SKU
Catalogued 14 March 2026 Photographed · graded · published
Last revised 30 April 2026 Description or pricing updated
On hand 2 specimens Ships from Geneva
No. 04 / Related specimens

Other parts on the bench.

GERALD GENTA – Gefica – GBS.Y.98 – Bronze and Titanium Case. Awaiting the bench it deserves.

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