Seiko Cal. 6639 - 328

Seiko 6639-328

The 6639-328 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-e32c05bae7e2]

Also known as: Helmet

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
11.8mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Navy
Jewels
33j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1987

Related Models

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