Seiko Caliber 11a

Seiko Caliber 11A

Seiko Caliber 11a

Manufacturer Seiko Time Corp.
Caliber Number 11A
Base Caliber
Seiko 1104A
Movement Type Mechanical, manual-wind
Diameter
15.15mm x 13mm
Height
3.5mm
Jewel Count
17 or 21
Beat Rate
21,600 vph
Lift Angle
Unconfirmed
Power Reserve
Unconfirmed
Anti-Shock Device
Diashock
Hand Count 2
Functions Central hours; central minutes
Country of Manufacture Made in Japan or Singapore
Known Models
Vintage ladies Seiko watches (Add your watch to the comments below…)

The Seiko caliber 11A is a basic mechanical 2-hander lady’s small size watch movement.

Not to be confused with the Seiko 11A Indicator men’s wristwatches.

Variations of 11A:

The 11A can be found with 17 jewels or 21 jewels, as well as made in Japan or made in Singapore.

Seiko 11A VS 1104A:

There is a similar caliber 1104A which the 11A is based on. The main difference is that the 1104A has a central seconds hand.

Additional Resources:

Submitted by member Rodders

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