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Jeambrun PS31A
Ligne: 11.5'''
Jewels: 17
Power Reserve: 43 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1970
Diameter: 26 mm
Height: 4.7 mm
Hands: 1.50 x 0.90 x 0.21 mm
The Jeambrun PS31A watch movement features a distinct arrangement whereby the train and hand gear are independently driven by the barrel. A direct comparison with the X171 is unavailable, making the differences between the X171 and X172 unspecified. The X172 movement is a manual wind movement with a sweep second function, and it incorporates a calendar with the date set by changing 21:40-24h. This movement was utilized during the approximate period of 1970.
The Jeambrun PS31A features the following functions:
- Calendar
- Date: set by changing 21:40-24h
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.130 x 300 x 9.5 mm | GR2988 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
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