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Felsa 283
Ligne: 18.5'''
Jewels: 15
Power Reserve: 41 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1945
Diameter: 41.65 mm
Height: 4.2 mm
Hands: 1.98 x 1.12 / 0.26 mm
Base: Unitas 233
The Felsa 283 is a hunter calibre mechanical watch movement utilized from approximately 1945. It features functions such as stem winding and setting, as well as a small seconds subdial. The movement may incorporate an optional Breguet hairspring, and there may be variations in the design of its bridges, including a probable left-handed ratchet-wheel screw. It is unclear what differences exist between the Unitas 234 and 444 movements, as they seem to be catalog designations primarily denoting varying bridge shapes.
The Felsa 283 features the following functions:
- Stem wind and set
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.210 x 490 x 17.0 mm | Manual | Buy mainspring | |
| 1.50 x 0.210 x 480 x 15.5 mm | GR4365 | Manual | 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 |
|---|---|---|---|
| BALANCE COMPLETE | 721/673 | Buy part | |
| BALANCE COMPLETE INCA | 721/1830 | Buy part | |
| CANNON PINION, HT 2.65 (A1) | 240/1095 | 00240.6497.01 | Buy part |
| CANNON PINION, HT 3.15 (A3) | 240/2104 | 00240.6497.03 | Buy part |
| JEWEL, INCA BALANCE 180X59X12 | 400/50 | 511.12/INCA #34 | Buy part |
| JEWEL, INCA LOWER CAP 153X23 | 400/47 | 522.11/INCA #33 | Buy part |
| PALLET ARBOR | 72S/121P | 1312/OME 150 | Buy part |
| ROLLER 345X100X60 | 82S/182R | 82S/182R | Buy part |
| SCREW, INCA SHOCK 95 LENGTH | 400/44 | 560.41/INCA #36 | Buy part |
| SHOCK UNIT, COMPLETE LOWER H12 | 400/62 | 500.20.12 | Buy part |
| SHOCK UNIT, UPPER | 400/59 | 400/59 | Buy part |
| SPRING, INCA SHOCK 320X200 | 400/45 | 570.02-3/INCA #31 | Buy part |
| STAFF | 100/716 | Buy part | |
| STAFF, INCA | 100/1096 | Buy part | |
| STEM, X-LONG T6 | 200/793F | 401/UT 285 | Buy part |
| STEM, X-LONG T6 27.97MM | 401/1524 | 00401.6497.7279 | Buy part |
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