Seiko 21D
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| Seiko 21D |
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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
| Manufacturer | Seiko |
| Caliber | 21D |
| Number of jewels | 17 |
| Escapement | Anchor with pallets |
| Balance | Glucydur |
| Shock protection(s) | Diashock (Seiko) |
| Balance cock direction | counterclockwise |
| Hairspring stud | moveable |
| Regulator type | Hairspring key |
| Movement construction | Fork
Escapement wheel, Fourth wheel, Third wheel, Center wheel
Mainspring barrel |
| Functions | Hour, minute |
| Beats per hour | 19800 |
| Size | 63/4 x 8''' |
| Image in Flume Werksucher | (K3 -) |
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| Factsheet |
Usage gallery
