Offered is a genuine vintage Vacheron Constantin Geneve Caliber 1003/1 manual-wind movement supplied with genuine 18K gold crown, stem, and hands.

The movement is engraved:

• “Vacheron & Constantin Geneve”
• “Swiss”
• “17 Jewels”
• “Adjusted to 5 Positions”
• “Heat, Cold & Isochronism”
• “1003/1”

The Vacheron Constantin Caliber 1003/1 is one of the most historically significant ultra-thin Swiss manual-wind movements ever produced. Introduced in 1955 and developed from the legendary Jaeger-LeCoultre Caliber 803 ebauche, the Cal. 1003 became renowned for its exceptionally thin architecture and was used in some of Vacheron Constantin’s most elegant dress watches.

At approximately 1.64 mm thick, it remains one of the thinnest mechanical hand-wound movements ever manufactured. The caliber is highly regarded among collectors and watchmakers for its finishing quality, ultra-thin construction, and historical importance in haute horology.

---

⚙️ Technical Specifications 

---

🔗 Historically Associated Models (Not Guaranteed Fit)

The Vacheron Constantin Caliber 1003 / 1003/1 family is historically associated with:

• Vintage Vacheron Constantin ultra-thin dress watches
• Mid-century Vacheron Constantin Patrimony-style references
• Slim gold dress watch references from the 1950s–1970s
• Certain high-grade manual-wind Geneve dress models

⚠️ Compatibility depends on:

• case architecture
• dial feet placement
• stem alignment
• hand sizing

Watchmaker verification is buyer's responsibility before purchase and installation.

---

⭐ Highlights

• Vintage Vacheron Constantin Caliber 1003/1 movement
• One of the thinnest mechanical manual-wind calibers produced
• Ultra-thin 1.64 mm Swiss architecture
• Genuine 18K gold crown included
• High-grade adjusted Swiss movement
• Strong collector and restoration appeal
• Important haute horology caliber

---

⚠️ Important Notes

• No dial included
• Vintage preowned movement assembly
• Movement currently operational; servicing recommended
• Accuracy and long-term performance not guaranteed without servicing
• Buyer must independently verify compatibility
• Photos form part of the description

---

Vacheron Constantin Cal 1003
Vacheron Constantin 1003 movement
Vacheron Constantin 1003/1
Vacheron Constantin ultra thin movement
Vacheron Constantin manual wind movement
Vintage Vacheron Constantin movement
Vacheron Constantin Geneve movement
Vacheron Constantin 17 jewel movement
Vacheron Constantin Swiss movement
Vacheron Constantin dress watch movement

Vacheron Constantin movement with crown
Vacheron Constantin 18K crown
Vacheron Constantin hands
Vacheron Constantin restoration movement
Vacheron Constantin OEM movement
Vacheron Constantin repair movement
Vacheron Constantin collector movement
Vacheron Constantin horology parts
Vacheron Constantin haute horology
Vacheron Constantin ultra thin caliber

Caliber 1003 movement
Cal 1003/1 movement
JLC 803 derived movement
Swiss ultra thin movement
Swiss manual wind movement
high grade Swiss movement
ultra thin mechanical movement
watch restoration movement
watchmaker repair movement
luxury Swiss movement

Patrimony movement
Geneve dress watch movement
Swiss vintage movement
mechanical watch movement Swiss
vintage haute horology movement
collector watch movement
thin mechanical caliber
Swiss OEM watch movement
manual wind dress movement
ultra thin Geneve movement