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General 8420
(Helvetia)
The General 8420 watch movement features an adjustable stud holder, shock protection, sweep seconds, a calendar function, and operates at a beat rate of 21600 vibrations per hour (vph).
The General 8420 features the following functions:
- Adjustable Stud Holder
- Calendar
- Shock Protection
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|
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 |
|---|---|---|---|
| CLICK & SPRING COMBO | 434/156 | 425/430/FF 98 | Buy part |
| DATE JUMPER GUARD | X/4862 | 52595/FF 984 | Buy part |
| SCREW, CASE | 5101/310 | /FF 984 | Buy part |
| SCREW, CASE SPECIAL | 5102/63 | Buy part | |
| SCREW, CROWN WHEEL | 5420/167 | Buy part | |
| SCREW, DIAL SIDE | 5750/434 | Buy part | |
| SCREW, DOUBLE INTER WHEEL | A/6451 | 52543/FF 90-5 | Buy part |
| SCREW, RATCHET WHEEL | 5415/670 | 31.020.0/FF 400 | Buy part |
| SCREW, SET LEVER | 5443/333 | Buy part | |
| SCREW, STUD | 5738/367 | Buy part | |
| STAFF, GENUINE SHOCK | 723/1307 | 728/FF 98 | Buy part |
| STEM, GENUINE | 401/1020 | /FF 98 | Buy part |
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