Tissot Chrono Janiero, 1968 Tissot chronograph, vintage Swiss watch, COSC chronometer, mechanical chronograph, Swissair watch, ZeitZone, chronograph for sale, Swiss horology, vintage timepiece, collectible watch, precision chronometer, mid-century design, original owner watch. | Aspect | Grade | Notes |
|--------|-------|-------|
| Case | 8.5/10 | Light patina, no major damage |
| Dial | 9/10 | Original, vibrant, excellent lume |
| Crystal | 8/10 | Original acrylic, minor surface wear |
| Movement | 9/10 | Excellent timekeeping, COSC certified |
| Completeness | 10/10 | Original strap, full documentation |
| **Overall** | **9/10** | **Museum-quality vintage** |
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