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Tank Must · 2021 to present (code changed 2025)

Cartier Tank Must SolarBeat Large WSTA0138

50SCORE / 100
D
Grade D: passion purchaseToday's call · Buy it to wear, not to flip
Short termunder 1 yearWeakMid term1 to 3 yearsWeakLong term3+ yearsWeak

Rank #34 of 41 rated pieces in the Cartier Vault

Retail (2026)$3,900
Typical sale today$3,400Typical range $3,200 to $3,700
Vs retail-12%
1-yearn/a

Market range: the middle half of 8 recorded eBay sales in the last 12 months.

Open in the interactive VaultLive eBay listings ↗︎

Market price history

20232025 $3,400

Median recorded eBay sale price for each quarter with 3 or more sales. Dashed line marks the 2026 retail price.

Investment scorecard

Momentum50Measured price direction: the median recorded sale of the last 4 months against the median of 8 to 12 months ago. 50 means flat; small samples are pulled toward 50.
Liquidity38How easily it sells: recorded sales in the last 12 months (300 or more scores 100) and eBay's 90-day sell-through rate.
Scarcity44Demand against supply. For modern pieces, how far the market sits above or below current retail, plus a lift if production has ended. For vintage, how rarely one comes up for sale.
Value entry50Where the latest quarter's median sale sits inside its own 3-year range. Buying near the low scores high; buying at the high scores low.
Condition safety89How safe a typical example is: the age of the design, plus how tightly sale prices cluster (a wide spread means condition and originality swing the price).

The story

The SolarBeat Tank Must charges from light that passes through tiny perforations hidden inside the Roman numerals.

Cartier rates the battery for about 16 years. It sells less often than the regular quartz Tank Must.

Also sold under references WSTA0059, WSTA0122; every one of them is counted here.

Our verdict: Sells for about 13% under its $3,900 boutique price. 8 recorded eBay sales in the last 12 months, with prices flat over the year.

Configurations

Sizes25.5mm
Case & braceletStainless steel
Factory braceletBlack non-animal strap with steel ardillon buckle
Factory bezels
Notable dialssilvered, Roman numerals with hidden perforations for light
CaliberSolarBeat photovoltaic quartz (about 16 year autonomy)
Production2021 to present (code changed 2025)

Recent recorded sales

SoldExamplePrice
Oct 30, 2026Pre-owned · eBay sale ↗︎$2,900
Aug 25, 2026New/unworn · eBay sale ↗︎$3,250
Mar 13, 2026Pre-owned · eBay sale$3,595
Feb 3, 2026Pre-owned · eBay sale$3,600
Dec 26, 2025Pre-owned · eBay sale$4,000
Dec 23, 2025Pre-owned · eBay sale$2,900

Recorded eBay completed sales, logged at our last data refresh.

If you like this one

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See the Tank Must SolarBeat Large in the VaultBrowse all references