Cartier Tank Louis Cartier WGTA0011
1917 Art Deco Brancards & Ultra-Thin Form Calibre
Technical Deep-Dive Monograph
1. Historical Context & Design Lineage
In 1917, Louis Cartier was inspired by the top-down view of the Renault FT-17 light tanks used during World War I—the lateral caterpillar treads forming the vertical brancards and the cockpit forming the case. The prototype was presented to General John J. Pershing in 1918. The Tank Louis Cartier, released in 1922, softened the sharp corners of the brancards into fluid, rounded bars. Reference WGTA0011 preserves this Art Deco proportion in solid 18k rose gold.
2. Movement Architecture & Energy Transmission
Calibre 1917 MC is a dedicated form movement designed specifically to maximize the internal rectangular geometry of the Tank case. Measuring 12.9 mm by 16.4 mm with a thickness of just 2.9 mm, it contains 19 jewels and provides 38 hours of power autonomy. The movement bridges are decorated with circular Côtes de Genève, paired with circular graining on the baseplate.
3. Escapement Kinematics & Tribology
Beating at 3 Hz (21,600 vibrations per hour), the movement relies on a traditional Swiss lever escapement with an Etachron regulator and Incabloc shock protection. To protect the regulating organ from daily electromagnetic exposure, Cartier places a soft amagnetic alloy shield between the movement and the precious metal case.
4. Metallurgical & Materials Science Analysis
The Medium Model case measures 33.7 mm by 25.5 mm with a slender thickness of only 6.6 mm, cast in solid 18k rose gold. The silvered beaded dial features classic black Roman numerals, the iconic inner chemin de fer (railroad) minute track, and thermally blued steel sword hands. The beaded crown is set with a cabochon sapphire.
5. Chronometric Performance & Testing Standards
Adjusted in multiple positions at Cartier’s manufacture in La Chaux-de-Fonds, the 1917 MC is tuned for reliable daily chronometry while honoring historic dress watch ergonomics.
Calibre Specifications Matrix
| Specification Parameter | Manufacturer & Laboratory Value |
|---|---|
| Calibre | Cartier Manufacture Calibre 1917 MC |
| Type | Ultra-thin manual-winding mechanical form movement |
| Movement Dimensions | 12.9 mm × 16.4 mm, 2.9 mm thickness (19 jewels) |
| Frequency | 21,600 vph / 3 Hz |
| Power Reserve | Approximately 38 hours |
| Escapement | Swiss lever with Incabloc shock protection and Etachron regulator |
| Case Dimensions | 33.7 mm × 25.5 mm, 6.6 mm thickness (Medium Model) |
| Case Material | 18k Rose Gold with rounded brancards |
| Crown | Beaded 18k rose gold crown set with genuine sapphire cabochon |
| Water Resistance | 30 metres / 3 bar |
| Finishing | Circular Côtes de Genève, blued screws, chemin de fer chapter ring |
Primary Sources & Citations
- Cartier International Official Technical Dossier: Tank Louis Cartier Ref. WGTA0011 (cartier.com)
- Franco Cologni, 'Cartier: The Tank Watch – Timeless Style' (Flammarion Publishing)
- The Hour Glass Technical Review: Cartier Calibre 1917 MC Engineering Analysis
- WatchBase Horological Index: Cartier Calibre 1917 MC Specifications
Boutique Sales Enablement Dossier
Sales Enablement In Active Pilot
The luxury boutique sales enablement and client engagement dossier is currently piloted on flagship reference benchmarks: Day 01 (Rolex Submariner 126610LN), Day 02 (Omega Speedmaster 3861), and Day 08 (Audemars Piguet Royal Oak 15510ST).
Commercial Icon Technical & Advisory Suite: Cartier Tank Louis Cartier WGTA0011
Jev SystemOne 9.0+ StandardThe 1917 Louis Cartier Archetype (Purity of line inspired by Renault FT-17 military tank tracks), Precious Metal Exclusivity (Strictly 18k Rose/Yellow Gold or Platinum – never in steel), Calibre 1917 MC Manufacture Mechanical Movement (Hand-wound, 21,600 vph, 38-hour reserve, ultra-thin 6.6mm profile), Hallmark Cartier Design Signatures (Rounded brancards, genuine blue sapphire cabochon crown, silvered opaline dial, secret signature at VII)
◆ Floor Quick-Reference Card: Cartier Tank Louis Cartier Ref. WGTA0011
The Tank Louis Cartier (often abbreviated as “LC”) is the purest incarnation of Louis Cartier’s 1917 original design. Unlike the modern steel Tank Must, the Tank Louis is strictly reserved for precious metals, representing the pinnacle of Parisian dress horology and timeless understated elegance.
• Rounded Brancards: The vertical side bars (brancards) feature softened, rounded edges compared to the sharper, flatter profile of the Tank Must.
• Proportions: Large Model measuring 33.7 mm x 25.5 mm with an ultra-slim 6.6 mm thickness; slips under bespoke shirt cuffs effortlessly.
• Silvered Opaline Dial: Fine grained beaded texture with crisp Roman numerals and the chemin de fer railway minute track.
• Secret Signature: The micro-printed “CARTIER” signature integrated into the diagonal stroke of the VII Roman numeral.
• Ultra-Thin Architecture: Measuring just 2.9 mm thick, allowing the watch to maintain its wafer-thin silhouette without an oscillating weight rotor adding bulk.
• Tank Louis: 18k solid gold, mechanical manual-wind movement, genuine sapphire cabochon, heirloom horological connoisseurship.
Advisory Tip: Emphasize that the Tank is not judged by modern round watch diameter millimeter standards; its beauty lies in geometric classical golden-ratio proportions on the wrist.
◆ Client Advisory Script: The “Why Tank Louis Over Tank Must / Manual Wind Objection” Dialogue
Context: A client is considering a Cartier Tank but hesitates between a steel Tank Must and the 18k gold Tank Louis Cartier WGTA0011, questioning both the price gap and the manual-wind movement.
Client Question: “The Tank Must looks very similar at a third of the price, and it has an automatic or quartz movement that I don’t have to wind every morning. Why should I invest in the Tank Louis in rose gold?”
Senior Horology Advisor Reframing: “That is the classic dilemma that separates an attractive everyday accessory from a true haute horlogerie heirloom. The Tank Must is a brilliant watch, but the Tank Louis Cartier is the immortal soul of the Maison. Let’s look closely at what you are holding.”
Client Reaction: “What makes the case and details so different?”
The Tactile & Artisanal Demonstration: “Feel the brancards—the vertical bars running along the sides. On the Tank Must, they are flat and industrial. On this Tank Louis, they are softly rounded and hand-finished in solid 18-karat rose gold. Turn the crown toward the light: on the steel watch, you have a synthetic blue spinel. Here on the Tank Louis, Cartier sets a natural, mined blue sapphire cabochon. And inside beats the Manufacture Calibre 1917 MC.”
Client Hesitation (Manual Winding): “Isn’t having to wind it by hand every day a nuisance in modern life?”
The Intimate Horological Ritual Close: “Clients often worry about that before they own one, but within a week, it becomes their favorite thirty seconds of the day. Because there is no automatic rotor adding bulk, this watch is just 6.6 millimeters thin—it glides under your shirt cuff like silk. That 20-second morning wind is your personal connection to an unbroken tradition worn by Andy Warhol, Gary Cooper, and Louis Cartier himself. You aren’t just wearing a watch; you are wearing 100 years of pure design perfection.”
◆ Clinical Diagnostic Dilemma: The Cartier Tank Sizing & Crown Gemstone Verification
Clinical Scenario: A prestigious client enters your boutique wearing a Tank Must in stainless steel and looking to upgrade to the Tank Louis Cartier Large Model WGTA0011 in 18k rose gold. While inspecting the piece on their wrist, the client notes: “At 33.7 mm by 25.5 mm, this Large model feels much smaller than my 40 mm Rolex Submariner. Is this actually an adult men’s watch, and why does my steel watch crown feel different from this gold one?”
How should a Master Watch Advisor address the sizing psychology and explain the authentic horological gemological differences between Tank lines?
View Clinical Advisory Master Solution
• Reframe rectangular watch proportions: round sports watch diameters cannot be compared directly to rectangular timepieces. A 25.5 mm width with a 33.7 mm lug-to-lug length creates an optical presence equivalent to a 36–37 mm round watch due to dial surface area and case corners covering wrist width.
• Reassure the client that the Tank Large Model is Cartier’s classic historical gentlemen’s proportion, celebrated by icons from Duke Ellington to Muhammad Ali.
2. Gemological Differentiators (Mined Sapphire vs. Synthetic Spinel):
• Explain the Maison’s strict hierarchy: Cartier equips steel watches (Tank Must, Santos steel) with synthetic blue spinel cabochons. In contrast, all precious metal creations—including this 18k rose gold Tank Louis—are crowned with a natural, mined blue sapphire cabochon.
• Show the deeper, velvety natural blue luster of the sapphire crown under direct gemological boutique loupe lighting to seal the elevated prestige.