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The Encyclopedia of Horology

Wristwatch · Self-winding chronograph wristwatch

IWC GST Chronograph Ref. 3707

Partially verified

This International Watch Co. GST Chronograph, reference 3707, is a self-winding wristwatch manufactured circa 1998. The watch is constructed with a three-body titanium case measuring 40 mm in diameter and 14 mm in thickness, featuring a screwed-down case back, matching winding crown, overhanging bezel, and sapphire crystal. The black dial includes luminous baton indexes, luminous baton hands, three subsidiary dials for seconds, 12-hour, and 30-minute registers, an outer tachometer scale, and an aperture indicating the day of the week and date. It is powered by the rhodium-plated Caliber 7922 movement with 25 jewels. The watch is accompanied by an integrated titanium bracelet with a deployant clasp, original fitted box, setting pins, an extra link, and various booklets.

Front view of the IWC GST Chronograph in titanium showing the black dial, registers, and bracelet.
Front view of the IWC GST Chronograph in titanium showing the black dial, registers, and bracelet. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Self-winding chronograph wristwatch
Maker / attribution
International Watch Co.
Reference
3707
Catalogue / lot identifier
73
Source-reported date
circa 1998
Source-reported place
Switzerland
Source-reported serial
2750079

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial Construction

The watch is housed in a three-body titanium case, which incorporates a screwed-down case back and winding crown. The design features an overhanging bezel and is protected by a sapphire crystal. The case measures 40 mm in diameter with a thickness of 14 mm.

The black dial is fitted with luminous baton-style hands and indexes. It includes a tachometer graduation on the outermost perimeter, alongside an outer minute and seconds division. Sub-dials occupy the positions for the seconds and the 12-hour and 30-minute chronograph registers. An aperture integrated into the dial displays the day of the week and the date.

Evidence for this section
  • “Three-body, screwed-down case back and winding crown, overhanging bezel, sapphire crystal.”
  • “Black with luminous baton indexes, subsidiary dials for the seconds, the 12-hour and 30-minute registers, outer minute/ seconds division, outermost tachometer graduation”

Movement Details

The timepiece is driven by the Caliber 7922 automatic movement. This rhodium-plated caliber contains 25 jewels and utilizes a straight-line lever escapement. The construction incorporates a monometallic balance paired with a self-compensating flat balance spring and a shock absorber.

Functionality includes a hack mechanism and an index regulator for timekeeping adjustments.

Evidence for this section
  • “Cal. 7922, rhodium plated, 25 jewels, straight-line lever escapement, monometallic balance, shock absorber, selfcompensating flat balance spring, index regulator, hack mechanism.”
  • “Overhaul recommended, at buyer's expense”

Signed Components and Accompaniments

The manufacturer has signed the watch on the dial, the case, and the movement. It is presented on a titanium bracelet equipped with a deployant clasp. The approximate length of the piece is 185 mm, with an additional link included.

In addition to the watch, the lot comprises several original items including a fitted box, two setting pins, and assorted booklets.

Evidence for this section
  • “Dial, case and movement signed.”
  • “Accompanied by the original fitted box, guarantee (now void), 2 setting pins, 1 extra link and booklets.”

Open research questions

  • What is the specific production date range for the GST Chronograph series?
  • Were there multiple variations of the Caliber 7922 used in the Ref. 3707?

Source evidence

Recorded claims and source quotations for IWC GST Chronograph Ref. 3707
FieldSource-reported valueSource quotation
MakerInternational Watch Co., Schaffhausen“International Watch Co., Schaffhausen”
Case Number2750079“case No. 2750079”
MovementCal. 7922“M. Cal. 7922”
Case MaterialTitanium“titanium wristwatch”
CrystalSapphire“sapphire crystal”
Case diameter40 mm“Diam. 40 mm.”
Movement finishRhodium plated“rhodium plated”

Visible details

  • Integrated titanium bracelet with brushed finish
  • Day and date aperture positioned at the 3 o'clock mark
  • Round chronograph pushers located on the right side of the case

Research qualifications

  • The provided guarantee document is noted as void by the auction house
  • The auction house reports that a mechanical overhaul is recommended

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

IWC - Titanium - GST - Chronograph International Watch Co., Schaffhausen, "GST Chronograph Automatic," case No. 2750079, Ref. 3707. Made circa 1998. Fine, self-winding, water-resistant, titanium wristwatch with round button chronograph, registers, tachometer, day & date and a titanium IWC bracelet with deployant clasp. Accompanied by the original fitted box, guarantee (now void), 2 setting pins, 1 extra link and booklets.

Reviewed 2026-10-26 · Record eab2053994

Terms in this record

Glossary explanations for terms named in this object’s record.

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