The Seiko Almanac · by Tiny Hour Tales
Model reference

Seiko 54091M

seiko's deluxe "dx" series — fully automatic, instant day-instant date change, instant bilingual calendars, synchronized second setting, 98.2 ft. water tested · catalogued in 1969

Case
stainless steel
Jewels
17
Dial
green
List price
$69.50
Seiko 54091M as pictured in the Seiko V1, page 6
From the 1969 Seiko catalogue, page 6View Page

From the catalogue

Dial
green
Case
stainless steel
Jewels
17
Water resist.
98.2 ft
List price
$69.50
Specs
instant bilingual English-Spanish calendar · Hardlex mar-resist crystal · luminous · adjustable bracelet

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