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Baumgartner 20
Ligne: 11.5'''
Jewels: 17/21
Lift Angle: 52°
Power Reserve: 50 hrs
Frequency: 21600 vph
Type: Manual Wind
Period used: 1969-1982
Diameter: 26 mm
Height: 4.8 mm
Hands: 1.50 x 0.90 x 0.25 mm
The Baumgartner 20 watch movement, produced from 1969 to 1982, featured several notable functions and specifications. This manual wind movement included a sweep second hand and was the first calibre to incorporate quickset day and date features. Additionally, the movement offered a hack feature option, allowing for precise time adjustment. With a production quantity of 6,156,000 units during its period of use, the Baumgartner 20 was a significant and widely-used movement in mechanical watches.
The Baumgartner 20 features the following functions:
- Date: quickset
- Day: quickset
- Manual Winding
- Option: Hack feature
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.095 x 380 x 10.0 mm | GR3654 | Manual | Buy mainspring |
| 1.40 x 0.090 x 360 x 10.0 mm | GR3632 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| CALENDAR DRIVING WHEEL | A/7294 | 2555/1-ETA 2769 | Buy part |
| DAY JUMPER SPRING | A/7305 | A/7305 | Buy part |
| DAY JUMPER SPRING | A/7298 | A/7298 | Buy part |
| JEWEL, INCA BALANCE 135X50X10 | 400/12 | 111.10/INCA #9 | Buy part |
| JEWEL, UPPER CAP INCA 120X18 | 400/8 | 122.11/INCA #6 | Buy part |
| MAINSPRING 1.40-.09-360 10 | MS-512S | GR 3654 | Buy part |
| SHOCK SPRING, LOWER 223 X 155 | 400/811 | 173.03/INC | Buy part |
| SHOCK SPRING, UPPER INCABLOC | 400/4 | 170.03/INCA #1 | Buy part |
| SHOCK UNIT, LOWER D230 H10 | 400/1517 | 163.20.10 | Buy part |
| SHOCK UNIT, UPPER | 400/1858 | 163.22.312.10 | Buy part |
| STEM, HELICOIDAL TAP 10 | 200/1735F (use 401/730) | 200/1735F | Buy part |
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