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Unitas 521
Ligne: 10.5'''
Jewels: 15
Power Reserve: 50 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1945
Diameter: 23.3 mm
Height: 3.55 mm
Hands: 1.30 x 0.60 / 0.21 mm
The Unitas 521 watch movement is a manual wind mechanical movement with a sub-second function. It belongs to a series of movements that include the 290 through 309, with differences in design and specifications not currently known. The Unitas 521 movement was introduced around 1945.
The Unitas 521 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.100 x 300 x 9.0 mm | GR4122 | Manual | Buy mainspring |
| 1.50 x 0.100 x 290 x 9.0 mm | 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 |
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