Crettiez 18 1/2''' Type 4a-2
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18 1/2”’ | Hand Wind | Swiss Lever | Small Seconds |
Remarks:
- For detailed information about the different types of Crettiez movement see Crettiez – Watch movements and social riots (watch-movements.eu) and the attached categorization chart.
- Common bridge for fourth wheel, third wheel and center wheel
- Ratchet wheel below the barrel bridge
- Click on the outside of the barrel bridge
- Setting lever screw to the left of the crown wheel
- Two hand setting wheels
- Without cover plate for hand setting wheels
- Variant of Crettiez type 4a: 4a and 4a-2 only differ in their bridge design
- Listing ID: 10944
- Manufacturer / Brand: Crettiez
- Caliber: 18 1/2''' Type 4a-2
- Size in French Lignes: 18 1/2'''
- Size range mm largest diameter: > 40 mm
- Shape: Round
- Winding: Manual (Crown)
- Hands Setting: Crown with pin/pusher
- Seconds Hand: Small seconds
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: None
- Jewels: 16
- Setting Lever Screw/Pin Position: Left
- Balance Position: Left (240 - 360°)
- Shock Protection: None
- Beats per hour: 18,000
- Balance Type: Bimetallic screw balance with Breguet hairspring
- Power Reserve: Unknown
- Production Period: Unknown, probably around 1920 - 1940
- Country: France
- Identification: See link mentioned above
- Contributor ©: Dean Batstone
- External Link 2: https://watch-movements.eu/blog/en/2022/05/01/crettiez-watch-movements-and-social-riots/
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