Movement record · Soviet Union (Chelyabinsk)
Molnija 3602
Partially verifiedA Soviet pocket-watch calibre derived from the Cortébert 616 design, produced in very large quantity at Chelyabinsk and widely used in both plain and presentation pocket watches.
Technical specifications
- Diameter
- Approx. 36 mm
- Height
- Approx. 4.5 mm
- Jewels
- 18
- Frequency
- 18,000 vph (2.5 Hz)
- Power reserve
- Approx. 40 hours
- Winding
- Hand wind
- Setting
- Pull-out crown
- Escapement
- Swiss-type lever
- Balance
- Monometallic balance, shock protection on later production
- Complications
- Subsidiary seconds
Identification features
- Cyrillic factory markings and jewel count on the movement
- Plate and bridge outline closely following the Cortébert design
- Often found today in later skeletonised or re-cased forms made for the export market
Known variants
- Plain 3602
- Skeletonised export versions
- Related Molnija calibres
Servicing notes
Mechanically simple and forgiving, which is why these movements are often recommended as practice pieces; genuine factory parts are still obtainable second-hand.
General guidance only. Antique movements should be serviced by a qualified watchmaker.
Historical significance
The most numerous mechanical pocket watch movement of the later twentieth century, and for many collectors the most accessible entry point into pocket watches.
Diagram
Sources & references
- Soviet watch factory catalogues and collector reference compilations
- Production totals are not reliably published; no figure is given here.
Where sources disagree, the disagreement is stated rather than resolved silently.