What a Tank Must WSTA0042 Clears for in Bangkok — June 2026
Tank Must returned to the Cartier lineup in 2021 after disappearing in the 1990s. The WSTA0042 prices at entry level for Cartier and uses SolarBeat — light-powered quartz that runs sixteen years without battery change.
Thai Watch Market drawn from our work in Bangkok's pre-owned market Jan–May 2026 — Tank Must is the highest-turnover Cartier in Thailand because it serves as the entry point for many buyers:
- Low ฿95,000 — 2021 references, worn, no box
- Median ฿112,000 — Full-set 2022–2023 with TH warranty
- High ฿135,000 — NOS 2024 with stickers
SolarBeat — Why Cartier Chose Quartz
Quartz inside a Cartier dress watch is divisive among traditionalists, but the Tank Must makes a deliberate case:
- 16-year battery-free — solar-powered cell beneath the dial
- Accuracy ±10 seconds/year — 100× more accurate than mechanical
- Lower service costs — Cartier's quartz service charges roughly half the mechanical fee
- Light weight — comfortable all-day wear
The trade-off: no horological soul that mechanical dress-watch collectors typically seek.
Tank Must vs Tank Louis Cartier vs Tank Française
| Reference | Movement | Size | Median Bangkok |
|---|---|---|---|
| Tank Must WSTA0042 | Quartz SolarBeat | 33.7×25.5mm | ฿112,000 |
| Tank Louis Cartier (Large) | Mechanical | 33.7×25.5mm | ฿295,000 |
| Tank Française mid | Quartz | 30.5×25.05mm | ฿165,000 |
| Tank Américaine large | Mechanical | 44.4×26.6mm | ฿385,000 |
Tank Must is the lowest-priced entry; Thai buyers commonly start here and upgrade to Tank Louis Cartier or Tank Américaine within 3–5 years.
What Bangkok Dealers Pay
| Scenario | Seller payout (2023 full set) |
|---|---|
| Full-set, TH warranty | ฿95,000–฿102,000 |
| Full-set, overseas warranty | ฿88,000–฿95,000 |
| No box, papers | ฿80,000–฿88,000 |
| Loose | ฿72,000–฿80,000 |
Dealers pay 78–82% — similar to Aqua Terra and Seamaster 300M.
Tank Must Thai Buyer Profile
From our transactions:
- 38% female wearers (the Large 33.7×25.5mm fits women and men with smaller wrists)
- 32% wedding or birthday gifts
- 22% first Cartier purchase
- 8% business-casual everyday watch
WSTA0042 Authenticity Checkpoints
- Roman numerals — VII at 7 (matches Santos)
- "Cartier" secret signature — hidden in the "X" at 10 o'clock; the Tank Must does NOT include the secret signature (reserved for Tank Louis Cartier and above)
- Octagonal crown + sapphire cabochon — Cartier-specific blue
- Solar dial — must allow light penetration to the SolarBeat cell; authentic dials show a subtle matte underneath
Price Movement 2022–2026
- June 2022 — ฿122,000
- December 2023 — ฿118,000
- December 2024 — ฿114,000
- June 2025 — ฿113,000
- June 2026 — ฿112,000
Down 8.2% from peak — stable thanks to Cartier's April 2024 and March 2026 MSRP increases.
Get a LINE quote for your Tank Must →
Data sources:
- Thai Watch Market database Jan–May 2026, from our work in Bangkok's pre-owned market- WatchCharts Tank Must
- Cartier Thailand documentation 2026