Seiko Lord Matic Special 5206-6020 – Daini Seikosha (October 1970)

Fully revised in September 2025

The Seiko Lord Matic Special 5206-6020 is one of the most technically advanced models in the Lord Matic series and was manufactured by Daini Seikosha in Tokyo in October 1970 .
It belongs to the upscale Lord Matic Special series, which was designed as a bridge between the regular Lord Matic models and the Grand Seiko line.

Equipped with the Calibre 5206A , a high-beat automatic movement with 28,800 vibrations per hour , it combines the advantages of automatic winding with the option of manual winding and a hacking seconds function . This movement is considered one of the most precise automatic movements Daini Seikosha has ever produced.

The stainless steel case displays the characteristic flowing lines of the early 1970s, while the silver sunburst dial with sharp indices and fine dauphine hands conveys a timeless elegance.

The watch was completely disassembled, cleaned, oiled, and regulated in Japan in September 2025. It runs steadily and accurately, and the date changes precisely at midnight.

Technical data

• Reference: 5206-6020
• Caliber: Seiko 5206A – Automatic with manual winding, hacking seconds, 25 jewels, Hi-Beat 28,800 A/h
• Movement origin: Daini Seikosha, Tokyo, Japan
• Year of construction: October 1970
• Case material: stainless steel, screw-on case back with Daini symbol ("lightning bolt")
• Diameter: 35.0 mm (excluding crown)
• Lug-to-lug: 39.0 mm
• Height: 9.4 mm
• Lug width: 18 mm
• Weight (including leather strap): 46 g
• Dial: Silver, sunburst finish, applied indices
• Hands: Dauphine shape, polished
• Display: Day/Date (bilingual: Japanese/English)
• Glass: Hardlex (original style)
• Strap: New black leather strap (classic, without quick-release system)

Special features

• High-precision Daini Hi-Beat automatic movement 5206A (28,800 semi-oscillations/h)
• Automatic movement with additional manual winding function
• Seconds stop function for precise setting
• Bilingual daily display (Japanese/English)
• Classic flat stainless steel case with elegant lines
• Full revision in Japan (09/2025)
• Very good overall condition with minimal signs of wear

Condition

Technically and visually in excellent condition.
The mechanism has been completely overhauled and regulated.
Original dial in very good condition, case with sharp edges and even finish. New leather strap fitted.

Warranty (used)
This is a used item . The limitation period for claims based on defects ( statutory warranty ) is 12 months from delivery .

Notice
As this is a used watch, water resistance cannot be guaranteed . To protect the movement, the watch should not come into contact with water or moisture.