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Eterna 1413U
Ligne: 10.75 x 10.75'''
Jewels: 17
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Automatic
Period used: 1948-
Size: 24.05 x 24.1 mm
Height: 5.5 mm
Hands: 1.22 x 0.66 / 0.16 mm
The Eterna 1413U watch movement, introduced in 1948, features a Breguet hairspring and is the first automatic movement produced by Gruen. This particular movement is equipped with an automatic (bumper) winding system and offers a sub-second function.
The Eterna 1413U features the following functions:
- Automatic (bumper)
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.45 x 0.085 x 240 x 7.5 mm | GR3930X | Auto | Buy mainspring |
| 1.45 x 0.085 x 240 x 7.0 mm | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| MAINSPRING 1.45-.085-240 7 | MSS-WA12 | GR 3930-X | Buy part |
| MAINSPRING BRIDLE | A/791 | Buy part | |
| ROTATOR | A/790 | Buy part | |
| SET LEVER | 443/GRU 475 | Buy part | |
| SHOCK ABSORBER SPRING | A/792 | Buy part | |
| STAFF, REG/INCA | 100/425A | Buy part | |
| STEM | 200/432F | 401/GRU 475 | Buy part |
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