Seiko Cal. 0731 - 623

This Spring Drive model from 1968 features a 39mm Gold-Plated case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-07e4dfe62da7]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1968

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