Seiko 8346-9010: The Enduring Appeal of the Vintage Seikomatic-R

The Seiko 8346-9010 is a vintage automatic watch reference from the 1960s, known for its elegant design and reliable Caliber 8346A movement.

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The Seiko 8346-9010 represents a significant period in Seiko's history, embodying the brand's commitment to sophisticated design and robust mechanical engineering during the 1960s. This reference is primarily associated with the Seikomatic-R and Business-A lines, both of which were celebrated for their refined aesthetics and reliable automatic movements. Often featuring a recessed crown for a sleek profile and a silver sunburst dial, the 8346-9010 captures the essence of the "Business Watch" era in Japan, offering a blend of practical luxury and timeless elegance that continues to appeal to collectors today.

Produced largely between 1966 and 1967, the 8346-9010 showcases a classic mid-century design. Its 37mm stainless steel case, often paired with a distinctive dolphin caseback, reflects a dedication to both form and function. These watches were designed to be both aesthetically pleasing and durable, making them enduring examples of vintage Japanese watchmaking.

From our Seiko archive

Other Seiko watches we have handled — shown for context; they are not the exact model on this page.

Reference Number

8346-9010

Model Name

Seikomatic-R, Business-A

Production Years

1966-1967

Case Size

37 mm

Movement	Automatic Caliber 8346A
Total Examples Scraped	4

What to look for in a vintage Seiko 8346-9010

When seeking a vintage Seiko 8346-9010, pay close attention to the dial condition. Many examples feature a silver sunburst dial with applied baton or rectangular indices, and while some honest vintage aging is expected, excessive spotting or moisture marks can affect its overall appeal. The dauphine-style hands should ideally match the hour markers and be in good condition.

Examine the 37mm stainless steel case for signs of polishing or significant dents. The recessed crown, a characteristic design element of this reference, should operate smoothly. Finally, ensure the automatic Caliber 8346A movement is running within vintage tolerances, as consistent timekeeping is crucial for a collectible timepiece.