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Zenith 4021
Ligne: 12.75'''
Jewels: 17
Power Reserve: 42 hrs
Frequency: 19800 vph
Type: Automatic
Period used: 1949-1952
Diameter: 28.5 mm
Height: 5.45 mm
Hands: 1.40 x 0.75 x 0.18 mm
The Zenith 4021 watch movement, also known as the 28.10T1 RA SC PC, was produced between 1949 and 1952, with over 1.3 million units manufactured from 1943 to 1955. This movement featured an automatic (bumper) mechanism and a sweep second function. Additionally, it offered the option of a power reserve display. The Zenith 4021 movement was widely used during its period of availability.
The Zenith 4021 features the following functions:
- Automatic (bumper)
- Option: Power reserve display
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.095 x 300 x 9.0 mm | GR2605X | Auto | Buy mainspring |
| 1.10 x 0.100 x 250 x 8.5 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
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