The Seiko Almanac · by Tiny Hour Tales
Model referencemedium confidence

Seiko SEIKOSHARAILWAYNO.21-24

seikosha pocket watches (セイコーシヤ懐中時計) · catalogued in 1932

Case
nickel / chrome
Jewels
7
List price
¥16.00 (21 ニツケル側 両捻 佛鈕 七石入) / ¥16.00 (22 ニツケル側 両捻 丸鈕 七石入) / ¥16.50 (23 クローム側 両捻 佛鈕 七石入) / ¥16.50 (24 クローム側 両捻 丸鈕 七石入)
Seiko SEIKOSHARAILWAYNO.21-24 as pictured in the Seiko, page 2
From the 1932 Seiko catalogue, page 2View Page

From the catalogue

Case
nickel / chrome
Jewels
7
List price
¥16.00 (21 ニツケル側 両捻 佛鈕 七石入) / ¥16.00 (22 ニツケル側 両捻 丸鈕 七石入) / ¥16.50 (23 クローム側 両捻 佛鈕 七石入) / ¥16.50 (24 クローム側 両捻 丸鈕 七石入)
Specs
pocket watch · size 十六サイズ (16 size) · manual wind · 7 jewels

List numbers (21)–(24) are case/jewel variants of the one pictured watch; no model code printed. 佛鈕 / 丸鈕 = bow style. The 16-size movement (十六サイズ セイコーシヤ器械, 7 JEWELS) is pictured separately below.

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