The Seiko Almanac · by Tiny Hour Tales
Model reference

Seiko SEIKO10SENDAN-BUCHINO.40-41

seiko wristwatches (セイコー腕時計) · catalogued in 1932

Case
chrome
Dial
white, round numerals (白丸支)
List price
¥9.60 (40 クローム側 白丸支 七石入) / ¥11.10 (41 クローム側 白丸支 十石入)
Seiko SEIKO10SENDAN-BUCHINO.40-41 as pictured in the Seiko, page 3
From the 1932 Seiko catalogue, page 3View Page

From the catalogue

Dial
white, round numerals (白丸支)
Case
chrome
Bracelet
wide leather strap (巾廣腕革付)
List price
¥9.60 (40 クローム側 白丸支 七石入) / ¥11.10 (41 クローム側 白丸支 十石入)
Specs
wristwatch · size 10形 · manual wind · jewels 7 / 10

List numbers (40)–(41) are case/jewel variants of the one pictured watch; no model code printed.

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Not this reference or caliber — simply the Seiko-family watches available today.