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ETA 2491
Ligne: 16.5'''
Jewels: 15
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 37.2 mm
Height: 4.2 mm
Hands: 2.00 x 1.15 / 0.27 mm
The ETA 2491 is an open-face calibre watch movement with varying bridge shapes. It is likely equipped with a left-handed ratchet-wheel screw. The specific differences between the Unitas models 285, 293, 299, 303, 327, 331, 335, 339, 345, and 497 are not known. The movement features the functions of stem winding and setting, as well as a sub-second display. It was commonly used in watches produced around the year 1940.
The ETA 2491 features the following functions:
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.180 x 450 x 15.0 mm | Manual | Buy mainspring | |
| 1.50 x 0.175 x 440 x 14.5 mm | GR43071 | 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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