1950s Cartier "Tank Duoplan" with EWC Movement Cal.409 Backwind in 18K Yellow Gold
| Manufacturer | Cartier |
|---|---|
| Model | Tank Duoplan |
| Year of Manufacture | 1950s |
| Reference no. | --- |
| Product no. | B-10168 |
| Price |
This is a very rare 1950s Cartier "Tank Duoplan" watch. It features a European Watch & Clock Company (EWC) movement, specifically the Caliber 409, which is known for its rarity. This particular model is a rectangular 18k yellow gold version with a back-winding mechanism. It showcases a unique symmetrical design, characteristic of back-winding cases and two-hand dials. Among the diverse variations of the Tank series, this watch stands out as a truly precious and remarkable piece.
Item details
| Serial no. | 127,*** |
|---|---|
| Caliber | EWC Cal.409 |
| Movement no. | 246,*** |
| Movement type | Manual winding |
| Material | 18K Yellow Gold |
| Case size | 22×33mm |
| Case type | Snap-back, non-waterproof |
| Dial | Original |
|---|---|
| Type of Indices | Printed |
| Belt | Non-original strap (lug width 16mm) |
| Evaluation case | 93% |
| Evaluation dial | 93% |
| Evaluation mov | 95% |
| Condition | 4.5 |
| Rarity | 5 |
Other details
Case: Minor scratches and age-related wear, but retains original shaping and hallmarks.
Dial: Slightly aged, but clean with no noticeable flaws.
Movement: The movement is well wound and the accuracy is around 40 seconds per day.
Dial: Slightly aged, but clean with no noticeable flaws.
Movement: The movement is well wound and the accuracy is around 40 seconds per day.











