Name: Cartier Privé Tank Normale (Platinum) WGTA0109
Brand: Cartier
SKU: WGTA0109

The Tank Normale is where it all started. Louis Cartier designed the original in 1917, inspired by the plan view of the Renault FT tank, and the WGTA0109 is Cartier's Privé recreation of that exact reference in platinum. If you want the Tank in its purest, most historically grounded form, this is it.

What it is

Louis Cartier sketched the Tank in 1917 and gifted the first examples to General Pershing and close friends before the watch was ever sold commercially. The Normale is the original proportioned design: longer brancards, a taller case, and a dial layout that defined every Tank variant that followed. Cartier launched the Privé collection to bring serious collectors back to specific historic references with period-correct details rather than modernized interpretations.

The WGTA0109 stays faithful to those 1917 proportions, handwound movement and all, finished in platinum to signal it as a collector's piece rather than a daily reference. It is one of the few ways to buy a Tank that traces a direct, uninterrupted line back to the original design intent.

Buying notes

The 27.5mm case reads smaller than modern dress watch tastes expect, and buyers who haven't handled one in person sometimes underestimate how present it actually wears on the wrist. Privé pieces are boutique-only and produced in limited numbers, so gray market supply is thin and premiums can be significant relative to the list price. Platinum scratches differently than steel or gold and develops a distinct matte patina over time; buyers who want a mirror finish should know that platinum requires more frequent polishing to maintain it.

The sapphire caseback is a Privé detail, which is a departure from the solid casebacks on vintage originals, so purists should decide in advance whether that matters to them. Cartier doesn't publish Privé production numbers, which makes resale pricing harder to benchmark than for standard collection references.

Market read

Privé pieces rarely appear at auction in the condition that justifies their list price, and gray market supply is genuinely limited. Expect to pay at or above retail if you find one in unworn condition with box and papers. This is not a reference that trades at a discount.

Service expectations

The caliber 1917 MC is a manual-wind movement serviced exclusively through Cartier's authorized network. Cartier recommends service every 4 to 5 years; for a platinum case at this price point, using an independent watchmaker is not advisable, as Cartier controls parts availability for this caliber.

Editorial copy is AI-drafted from primary sources and reviewed by Grail Atlas before publication. Where the text is uncertain about a fact, it says so. Email corrections@grailatlas.com if something reads wrong. Signals on this page (community, OSINT) are clearly separated from the editorial sections.

Limited · 200 pieces#7 in family

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Movement tier: unclassified · caliber Cartier Cal. 070: manual-wind, 25,200bph, 38h PR, 21j, 82 parts; supplied by Le Temps Manufacture rather than made in-house; used in the 2023 Prive Tank Normale · 38h power reserve · family design Louis Cartier

Small case: suits slender wrists (under 6.5 in / 16.5 cm)

27.5 mm case. A compact, elegant wear. Particularly at home on narrower wrists where larger cases can overhang.

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Authentication

Verify the PT950 platinum hallmark in the caseback; the density difference from white gold is measurable on a scale.

Known issues in the market

White gold examples are occasionally misrepresented as platinum; the PT950 hallmark and the density-weight difference are definitive.
The proportions of the Tank Normale (shorter and squarer than the modern Tank Must) are reference-specific; measure before purchase.

Area	What to check	What is correct	Red flag
caseback	PT950 platinum hallmark	PT950 hallmark stamped inside the caseback with consistent depth and correct font	No hallmark or a WG (white gold) hallmark; material misrepresentation
case	Tank Normale proportions versus Tank Must	Shorter and squarer case dimensions matching the historical Tank Normale proportions	Taller, more elongated case matching modern Tank Must dimensions; wrong reference

Common legitimate replacements

Platinum cases are occasionally replaced with white gold; the hallmark and weight difference confirm the material.

Expert resources: Cartier WGTA0109 Prive documentation. Antiquorum auction records for Tank Normale proportions reference.

Authentication guide

Last reviewed June 2026

The Privé Tank Normale revives the proportions of the original 1917 Tank design: taller than it is wide, with a relatively narrow case and long lugs. The "Normale" proportion (as opposed to the wider "Américaine" or the elongated "Cintrée") is the defining visual trait. Platinum metal and the historical "Cartier Paris" dial text are the key authentication points.

Known reproduction risks

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LOW

Very low reproduction risk; the Privé Normale is a limited, expensive reference with minimal secondary market volume.

Case proportions that do not match the tall, narrow Normale specification immediately disqualify an example

Dial variants by era

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Era	Description	Identifiers
Privé series, 2018 to present	White lacquer dial with black Roman numerals and blued sword hands. Proportions are tighter and taller than the modern Tank Solo or Tank Louis Cartier.	Case is taller (more vertical) than wide, with the height-to-width ratio approximating the 1917 original "Cartier Paris" text on the dial, the Privé series hallmark Brancards (side rails) that are long relative to the case width, making the watch appear to be all lugs Manual-wind crown on the left at 9 o'clock; no crown guard Platinum case; noticeably heavier than white gold for comparable dimensions

Service part flags

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Case proportions

Original: The Tank Normale is distinguished from other Tank variants by its proportions. The case height exceeds the case width. The brancards are relatively long and the case width is narrow.

Replacement tells

Any case presented as a Normale where the width equals or exceeds the height -- those would be Américaine or Solo proportions
Brancards that are too short relative to the case height, making the watch look more square than the Normale should

Case back markings

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Privé series, 2018 to present

PT950 platinum hallmark
Reference WGTA0109 and serial number
"CARTIER PARIS" consistent with Privé series designation

Movement tells

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Cal. 430 MC manual wind, as used across the Privé Tank series. Solid caseback; movement assessed at service only.
Box and papers are standard expectation for any Privé acquisition. Cartier boutique authentication is available for numbered Privé pieces.

Sources: Cartier -- Collection Privé documentation.