Rare 18K yellow gold Longines self-winding Ultra-Chron, circa 1970, is a round center second automatic wristwatch. The 34.5mm case has a gold bezel, silvered dial with applied baton hour indexes, center second sweep, date window at 3 o’clock, and luminous gold hands. The caliber 431 17 jewel automatic movement
- 34.5mm Case in 18K
- Calibre 431
- No box
