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[TABLE="width: 100%"]
[TR="bgcolor: #F8C8C8"]
[TD="width: 250"]
Fig. 1
Fig. 2
[/TD]
[TD="bgcolor: #FFD2D2"][SIZE=+1]Zenith 12-4-P[/SIZE]
Features
manual wind
sub second
Data
12''', Dm= 26.52mm, Do= 27.25mm
H= 4.2mm
(winding gear +0.05mm)
F= 0.4mm
T= 1.6mm
15 jewels
f = 18000 A/h
power reserve 44h
Balance staff U1159
Stem W945
Mainspring / battery
1.55 x 10.5 x 0.10mm
Hands
1.30 x 0.75 / 0.16mm
[/TD]
[TD="width: 40%"]Remarks
bimetallic screw balance
option: Breguet hairspring
family:
12-4-P: sub second
12-4-P-50: sweep second
12-4-P-6: sub second, Incabloc
12-4-P-50-6: sweep second, Incabloc
12-4-P-7: stem unlocking from dlal side
The meaning of the "P" in the designation is uncertain. In many registers it is missing (even in Zenith data sheets), in other it is generally present. In the Zenith 106 line it has the fuzzy meaning "mouvement pincé", and appears only for the base version with sub second. Unfortunately I have presently only photos of a movement signed with 12 4-P, and can't yet say, which variants exist with and/or without "P".
Example, year: signature; shock device
1942: 3410766, Zenith, 12 4-P[/TD]
[/TR]
[/TABLE]
[TABLE="width: 100%"]
[TR="bgcolor: #F8C8C8"]
[TD="width: 250"]
Fig. 1
Fig. 2
[/TD]
[TD="bgcolor: #FFD2D2"][SIZE=+1]Zenith 12-4-P[/SIZE]
Features
manual wind
sub second
Data
12''', Dm= 26.52mm, Do= 27.25mm
H= 4.2mm
(winding gear +0.05mm)
F= 0.4mm
T= 1.6mm
15 jewels
f = 18000 A/h
power reserve 44h
Balance staff U1159
Stem W945
Mainspring / battery
1.55 x 10.5 x 0.10mm
Hands
1.30 x 0.75 / 0.16mm
[/TD]
[TD="width: 40%"]Remarks
bimetallic screw balance
option: Breguet hairspring
family:
12-4-P: sub second
12-4-P-50: sweep second
12-4-P-6: sub second, Incabloc
12-4-P-50-6: sweep second, Incabloc
12-4-P-7: stem unlocking from dlal side
The meaning of the "P" in the designation is uncertain. In many registers it is missing (even in Zenith data sheets), in other it is generally present. In the Zenith 106 line it has the fuzzy meaning "mouvement pincé", and appears only for the base version with sub second. Unfortunately I have presently only photos of a movement signed with 12 4-P, and can't yet say, which variants exist with and/or without "P".
Example, year: signature; shock device
1942: 3410766, Zenith, 12 4-P[/TD]
[/TR]
[/TABLE]
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