Vacheron Constantin Traditionnelle Perpetual Calendar Ultra-Thin 43175/000P-B190
About This Watch
The Vacheron Constantin Traditionnelle Perpetual Calendar Ultra-Thin in platinum represents the ultimate expression of the maison's ultra-thin perpetual calendar concept within its most classically styled collection. The platinum case adds gravitas — literally, as platinum is denser than gold — while the deep blue dial creates a striking contrast against the platinum's cool grey tones. The caliber 1120 QP remains one of the thinnest perpetual calendar movements ever made, enabling the extraordinary 8.9mm case thickness that makes this grand complication feel like a dress watch on the wrist. The perpetual calendar mechanism tracks day, date, month, moon phase, and leap year, requiring no date correction until 2100. The Traditionnelle design language adds refined details including a fluted case middle, applied hour markers, and Dauphine hands that distinguish it from the more austere Patrimony. The platinum execution positions this at the summit of the range, appealing to collectors who appreciate the understated density and prestige of the noble metal combined with one of watchmaking's most intellectually satisfying complications.
In-Depth Review
# EDITORIAL: The Perpetual Calendar Paradox at Vacheron Constantin
When a manufacture completes a perpetual calendar that won't require adjustment until the year 2100, then encases it in a package so slim it barely breaks 9mm, the result demands scrutiny beyond specification sheets. The Traditionnelle Perpetual Calendar Ultra-Thin 43175/000P-B190 represents a specific philosophy: that haute horlogerie complications need not demand thick wrists or bold statements. Vacheron Constantin's Caliber 1120 QP accomplishes what few others attempt—delivering a perpetual calendar, moon phase indication, and leap-year programming in a remarkably refined movement that respects the wearer's desire for subtlety. The platinum case, blue dial, and matched alligator strap create an object of restrained elegance rather than mechanical theater. This is watchmaking for those who understand the achievement without needing to announce it.
The owner of this watch occupies a particular space: wealthy enough to afford six figures for a single timepiece, yet sophisticated enough to reject oversized sports watches in favor of classical tradition. This is the collector's daily wear, the lawyer's quiet power move, the investor's understated confidence made wearable. At roughly $105,000 on the secondary market, it targets patrons of vintage Patek Philippe perpetuals and contemporary independent watchmakers, positioned as the alternative to Patek's Ref. 5940 or A. Lange & Söhne's Perpetual Calendar in 41mm.
What distinguishes this Vacheron Constantin from those competitors is architectural restraint. While the Lange achieves comparable complexity in a heftier package, and Patek Philippe charges premium prices for heritage cachet, the Traditionnelle delivers horological substance within classical proportions—
Specifications
Movement
| Movement Type | Automatic |
|---|---|
| Caliber | Caliber 1120 QP |
| Power Reserve | 40 hours |
| Frequency | 19,800 vph |
| Jewels | 36 |
Case
| Case Diameter | 41.0mm |
|---|---|
| Case Thickness | 8.9mm |
| Case Material | Platinum 950 |
| Crystal | Sapphire with anti-reflective coating |
| Bezel | Fixed, polished |
| Dial Color | Blue |
| Lug Width | 21mm |
| Lug-to-Lug | 48.0mm |
Features
| Water Resistance | 30m / 98ft |
|---|---|
| Bracelet/Strap | Blue alligator leather strap |
| Clasp | Platinum folding clasp |
| Weight | 110g |
| Complications |