Cartier Tank WSTA0041

The WSTA0041 exists because Cartier relaunched the Tank Must in 2021 and presented it as the successor to the Tank Solo line. The reason for splitting the relaunch into a quartz large, a quartz small and an automatic extra-large is not documented, but the result is visible in the catalogue: WSTA0042 is a smaller quartz at roughly 29.5 × 22 mm, while WSTA0040 moves to 41 × 31 mm and the automatic 1847 MC calibre. The three read as a family launch, and WSTA0041 sits in the middle as the thin quartz option. Colour-dial siblings followed in the same period, among them a burgundy reference 4323 sold in October 2021 and the green WSTA0056, whose marketplace listings run from 2021 onward. Cartier's SolarBeat Tank Must arrived as a different reference, WSTA0059, not as a later movement in the WSTA0041. After that, the record goes quiet. Listings dated 2021 through 2025 describe the same steel case, silvered dial and quartz movement, with no documented change of dial, movement or case across them, and no discontinuation date or replacement reference has been established. A watch that has held one specification through its documented run leaves little to date, and that is the point of it.

WSTA0042 and WSTA0040 launched with WSTA0041 in the 2021 relaunch and bracket it on size and movement; neither is its predecessor or successor.

The risk in buying a WSTA0041 is not misreading a variant, because none is documented, but paying a premium for a story. Claims of a special dial, a lucky serial prefix or a "transitional" configuration are collector lore unless Cartier documentation backs them, and the real differences between examples are condition, completeness and service history.

The people who reach for this watch want the Tank's silhouette without the weight of a gold case or a vintage purchase. At 6.6 mm thick it slides under a cuff, and used examples have commonly changed hands in the region of US$2,700 to US$3,300 (approximate, and asking prices run higher), a price that rewards the buyer who insists on a good one rather than a rare one.