The Seiko Almanac · by Tiny Hour Tales
Model reference

Seiko 51-5-172

seiko 5 sports (ファイブスポーツグループ) · catalogued in 1968

Case
SS
Jewels
23
Dial
black, black bezel
List price
¥13,500 (SS·WP·LB) / ¥14,000 (SS·WP·MB)
Seiko 51-5-172 as pictured in the 1968 Seiko JDM Catalog No.2, page 14
From the 1968 Seiko catalogue, page 14View Page

Identifiers

Case–dial code
808-808

From the catalogue

Dial
black, black bezel
Case
SS
Bracelet
MB
Jewels
23
Water resist.
WP 70 m
List price
¥13,500 (SS·WP·LB) / ¥14,000 (SS·WP·MB)
Specs
automatic · Hardlex crystal · luminous · rotating bezel · day-date

ファイブスポーツ (Five Sports); 自動巻・ハードレックス・夜光付・70メートル防水(回転リング付); 173 = same case/dial code, boxed 和 = day shown in Japanese characters (footnote: 和印は曜日が和文字です); one caption for two photos — this one on the metal bracelet (MB)

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