【Model】
Grand Seiko 2nd Generation (Ref. 43999) Self-Dater Chronometer.
A rare early execution featuring the "SD" (Special Dial) logo at the 6 o'clock position.

【Specifications】
• Year: 1965
• Dial: Original SD dial with gold star index.
• Caseback: Features the original Gold Lion medallion.
• Case Size: 36mm (excluding crown).
• Movement: Manual winding chronometer. All functions (time-setting, date-changing) are working perfectly.

【Condition】
• Accuracy: Currently running very well at approximately ±5 seconds per day.
• Maintenance: Although it is keeping excellent time, the service history is unknown. An overhaul is recommended for long-term reliable use.
• Exterior: Authentic vintage condition with natural wear consistent with its age. Please refer to the photos for details.

【Note】
Sold as-is for collectors. Water resistance is not guaranteed due to its vintage nature.