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The Encyclopedia of Horology

Movement record · Russia

Vostok 2409

Partially verified

Robust manual calibre for mass production

Technical specifications

Diameter
Approx. 24 mm
Height
Not recorded in the sources consulted
Jewels
17
Frequency
19,800 vph
Power reserve
Approx. 38 hours
Winding
Manual, stem wind
Setting
Pendant set
Escapement
Swiss-style lever
Balance
Monometallic balance
Complications
Subsidiary or centre seconds by version

Identification features

  • Cyrillic markings and simple robust construction

Known variants

  • 2414 with date
  • 2416 automatic relation

Servicing notes

Cleaning, lubrication, mainspring and pivot work belong with a qualified watchmaker working from calibre-specific documentation. Conserve original parts: replacing a worn component with a modern substitute changes the object, and refinishing plates or dials destroys evidence.

General guidance only. Antique movements should be serviced by a qualified watchmaker.

Historical significance

A durable, easily serviced calibre that kept mechanical watchmaking widespread in the former Soviet market.

Diagram

top plate or bridgespillar platebalance and cockwheel train between the plates
Schematic: plate and bridge layout. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

Sources & references

  1. de Carle, D., Watch and Clock Encyclopedia
  2. Period trade material catalogues and calibre reference compilations (edition-dependent)
  3. Published manufacturer technical documentation where available

Where sources disagree, the disagreement is stated rather than resolved silently.