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Unitas 520
Ligne: 4.5 x 11'''
Jewels: 17
Frequency: 18000 vph
Type: Manual Wind
Period used: 1929-1937
Size: 10 x 24 mm
Height: 3.2 mm
Hands: 0.95 x 0.56 mm
Base: Gruen ROL 170
The Unitas 520 watch movement, also known as Alpina 879 and Rolex 170, was manufactured by Aegler during the period of 1929-1937. It features a Breguet hairspring and an indirectly driven minute mechanism. This movement is manually wound.
The Unitas 520 features the following functions:
- Manual Winding
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.21 x 0.068 x 255 x 7.0 mm | Manual | Buy mainspring | |
| 1.20 x 0.065 x 260 x 7.0 mm | GR2850 | 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) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| ARBOR, PALLET 31X90X7 | 72S/166P | 714/MOV 45 | Buy part |
| CLUTCH LEVER & SPRING | 435/690 | 1470/ROL | Buy part |
| JEWEL, BALANCE CAP UPPER | 311/274 | 1446/ROL | Buy part |
| ROLLER | 730/GRU 879 | Buy part | |
| ROLLER 175X75X37 | 82S/31R (use 82S/34R) | 82S/31R | Buy part |
| ROLLER 175X80X36 | 82S/34R | 82S/34R | Buy part |
| SET BRIDGE | 445/845 | 1468/ROL 170 | Buy part |
| SET LEVER | 443/1062 | 1466/ROL 170 | Buy part |
| STAFF, GENUINE PIV 7 | 723/466 | Buy part | |
| STAFF, GENUINE PIV 8 | 723/467 | Buy part | |
| STAFF, PVT .07 | 100/417 | Buy part | |
| STEM | 200/423F | Buy part |
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