Seiko Cal. 3887 - 864

Seiko 3887-864

The 3887-864 is a sought-after Solar piece from Seiko's golden era. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-6a8a858754a5]

Also known as: Sumo, Helmet

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
10.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Cream
Jewels
20j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1974

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