IWC - Caliber C.403 'Serviced' - No reserve price - 2400 - Men - 1970-1979

Now available at auction from Second Vintage

This classic vintage IWC dress watch offers an outstanding configuration for discerning collectors. The pristine silver sunburst dial provides a striking visual presence, perfectly complemented by its original signed stainless steel mesh bracelet. Powered by the highly regarded manual wind caliber C.403, this timepiece represents a beautifully preserved example of mid-century Swiss watchmaking.

Brand: IWC
Reference Number: 2400
Serial Number: 2092137
Movement: Manual winding, caliber C.403
Dial: Silver sunburst with applied baton indices
Case Size: 34 mm (excluding the crown)
Case Material: Stainless steel
Production Year: circa 1970
Condition: Excellent vintage condition. Movement serviced on 16 October 2026. Timegrapher: +2+5s/day, performing remarkably well.

Dial and Hands
The pristine and elegant silver sunburst dial features a clean surface with no visible spotting or moisture damage. It is adorned with applied baton indices and an applied IWC logo, creating a highly refined aesthetic. The polished stick hands remain sharp and clean, displaying no visible oxidation or corrosion.

Case and Crystal
The stainless steel case presents a well-preserved thin profile dress design, featuring a polished finish with light surface scratches consistent with age and no major dents or deep dings visible. A thin polished bezel frames the dial, showing only light surface wear. The watch retains its knurled crown, signed with the recognizable IWC fish logo, which remains in good condition. A domed acrylic crystal protects the dial and remains clear, with no major scratches or crazing visible.

Movement
Powering this timepiece is the manual winding IWC caliber C.403. The movement displays clean plates and bridges with no visible oxidation or corrosion, while the screw heads appear in good condition. The caliber features clear engravings reading INTERNATIONAL WATCH Co., SWISS, 2068042, and C.403. The Caliber C.403 features 17 jewels, a micrometer regulator, and a monometallic balance adjusted to three positions. Recording +2+5s/day on the timegrapher, it is exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The movement was serviced on 16 October 2026.

Strap
The watch is fitted with its original signed bracelet. This elegant and well-preserved stainless steel mesh construction features a signed IWC clasp and shows no visible kinks or major deformation. The bracelet will accommodate a maximum wrist size of 20cm.

Condition
Excellent vintage condition. The movement was serviced on 16 October 2026 and, supported by the recorded timegrapher result, is performing very strongly. The silver sunburst dial and polished stick hands are exceptionally clean, showing no visible oxidation or moisture damage. The stainless steel case retains a well-preserved thin profile, displaying only light surface scratches consistent with age and no deep dings. The original signed mesh bracelet remains in highly attractive shape without major deformation.

Dimensions
The case measures 34 mm in diameter, excluding the crown.

Remarks
This classic vintage IWC dress watch presents a compelling opportunity for collectors. The exceptionally clean silver sunburst dial provides a striking visual presence on the wrist. Paired with its original signed stainless steel mesh bracelet and driven by the highly regarded manual wind caliber C.403, this timepiece offers a highly desirable configuration in superb preservation.

History
During the mid-twentieth century, the International Watch Company established a formidable reputation for producing elegant, highly refined dress watches powered by robust and precise calibers. The manual winding Caliber 403 is a notable part of this lineage, designed as a smaller descendant of the highly respected IWC Caliber 89. This allowed for thinner, more compact case profiles while maintaining the rigorous chronometric standards expected from Schaffhausen. Timepieces from this era remain highly regarded by collectors for their clean, balanced aesthetics and enduring mechanical quality.

Payment and Shipping
Payment must be completed within 1–3 days after purchase.
Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind.
We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination.
Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age.
We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description.
The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use.
If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you.
As with all used watches, water resistance is not guaranteed.
If you have any questions, feel free to contact us after the auction ends.

/ Second Vintage

SKU: IWC-IXX-0005