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Seiko 21D

 

Seiko 21DSeiko 21D

Description

This is a nice ladies' watch form caliber of a good quality from Japan. It uses a large Glucycur balance with two legs, a Diashock shock protection system and the anchor wheel runs in a chaton with an unidentified shock protection with an omega-shaped spring.

 

 

 Technical data

ManufacturerSeiko
Caliber21D
Number of jewels17
EscapementAnchor with pallets
BalanceGlucydur
Shock protection(s)Diashock (Seiko)
Balance cock directioncounterclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Center wheel
Mainspring barrel
FunctionsHour, minute
Beats per hour19800
Size63/4 x 8'''
Image in Flume Werksucher (K3 -)
Seiko 21DSeikoSeiko21D6 3/4 ''' 8''''''Seiko 21D17 Jewels, 6 3/4 x 8'''''', 19800 A/h
Factsheet

 

 

Usage gallery

Seiko ladies' watchSeiko ladies' watch