No products in the cart.
Return To ShopWatch Database
Longines 4
Ligne: 11'''
Jewels: 15
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1950
Diameter: 25.8 mm
Height: 3.2 mm
Hands: 1.30 x 0.84 x 0.21 mm
The Longines 4 is a lesser-known manual-wind version of the 0917 movement, which was specifically developed for Mido and utilizes the AS 1131/1132 base plate. Noteworthy features of this movement include a gold lever and the option of an Incastar regulator. The Incastar regulator is a unique large-scale produced regulator that incorporates a free oscillating hairspring fixed between two rollers to adjust its length and eliminate isochronism errors caused by the gap between regulator pins. The Longines 4 movement also includes functions such as manual winding and a sweep second hand. It was primarily used during the approximate period of 1950.
The Longines 4 features the following functions:
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.090 x 250 x 8.0 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 |
|---|
All watch database content © EmmyWatch LLC. Unauthorized redistribution of content is strictly prohibited. All rights are reserved.
