Seiko 6139-8040 Blue Eye Chronograph Dial 28.5mm - Vintage Cal. 6139

Seiko 6139-8040 Blue Eye Chronograph Dial 28.5mm

Own a piece of Japanese chronograph history with this authentic Seiko 6139-8040 'Blue Eye' chronograph dial. This iconic timepiece represents the golden era of Seiko's automatic chronograph movements, featuring the legendary Cal. 6139 that revolutionized affordable chronograph technology in the 1970s.

Technical Specifications:

• Brand: Seiko Japan
• Model: 6139-8040
• Type: Chronograph dial
• Diameter: 28.5mm
• Caliber: 6139 automatic chronograph
• Era: Vintage 1970s
• Nickname: 'Blue Eye' chronograph

Historical Significance:

The Seiko 6139 was one of the world's first automatic chronograph movements, competing directly with Swiss manufacturers at a fraction of the cost. The 'Blue Eye' variant is particularly sought after by collectors for its distinctive blue subdials and robust construction.

Collector's Features:

✅ Authentic Seiko 6139-8040 dial
✅ Iconic 'Blue Eye' design
✅ Vintage 1970s chronograph
✅ 28.5mm diameter
✅ Japanese horological heritage

Perfect for: Seiko 6139 restoration, vintage chronograph collectors, Japanese watch enthusiasts, or anyone seeking an authentic piece of affordable chronograph history.