Important Modern & Vintage Timepieces...

Geneva, Nov 10, 2019

LOT 92


CHF 8,000 - 12,000

HKD 64,000 - 96,000 / USD 8,000 - 12,000

Sold: CHF 10,000

A fine and rare, self-winding, titanium dive watch with mechanical depth indicator

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Grading System
Grade: AAA


Case: 2-8

Very good

Slightly scratched

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 2-01

Very good

HANDS Original

Brand IWC

Model Gst- Deep One

Reference 3527

Year Sold in July 2002

Calibre  8914

Case No. 2825636

Bracelet Titanium IWC bracelet with deployant clasp, approx. overall length 165 mm

Diameter 43 mm

Signature Dial, Case and Movement

Accessories Original fitted box, warranty card, instruction booklet, spare velcro strap, pump and setting pins, hang tag


The IWC Deep One, introduced in 1999, was the first wristwatch equipped with a mechanical depth gauge that showed depth up to 45 meters. The mechanical depth system is a Bourdon tube which acts as a pressure-sensing element. When water enters the coil tube, it causes the tube to rigidify. The pressure is then indicated by a depth gauge hand in white. A yellow hand indicates the greatest depth during a dive. This system was independent from the watch movement, a JLC 891. A pump was furnished with the watch to test the pressure gauge. The Deep one was made for a very short period due to its high cost of fabrication and relatively small market. Only a few IWC Deep One were sold and the watch was rapidly discontinued. Today, the watch has achieved cult status among collectors.