A manual-winding Must de Tank from the 1970s-80s. Size: LM Width: Approximately 23mm (excluding the crown) Strap width: Approximately 17mm This is a very rare item. The "must de Cartier" text and logo on the dial have faded over time, creating a ghost dial effect where they disappear depending on the angle. The dial color is a marble-patterned brown. I couldn't capture the marble effect in photos, so I've borrowed a similar photo from FIRE KIDS. Ghost dial Must de Tanks are extremely rare, making this a highly unusual piece. Furthermore, it comes with an international lifetime warranty, allowing for free, permanent repairs at Cartier boutiques without any expiration date. The buckle is aftermarket. The strap is still usable, but it's showing signs of wear, so consider it a bonus. The included accessories are everything shown in the first photo: International lifetime warranty Red storage box White outer box (quite worn, so it's a bonus) It is running without any issues. Instant purchase is welcome. Significant price reductions are difficult, but I'm open to some negotiation.