Seiko Cal. 6231 - 551

This Hand-Winding model from 1969 features a 41mm Gold-Plated case. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-2895a5a32cdf]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1969

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