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Fig. 1 Fig. 2 Fig. 3 Fig. 4 | [SIZE=+1]Bulova 10BH[/SIZE] Features manual wind sub second Data 10.5''', Dm= 23.3mm H= 3.6mm 17/21 jewels f = 18000 A/h power reserve 40h Balance staff U1786 Stem W2087 Main spring / battery Zf852, 1.30 x 9.0 x 0.10 x 290mm Hands 1.25 x 0.60 / 0.22mm | Remarks 1948-1949 Breguet hairspring only minor differences between 10BH, 10BM Example, year: signature; shock device 1-2) 1950: L0, Bulova Watch Co, U.S.A., 17 Jewels (Bulova 10BM) 3-4) 1952: L2, Bulova Watch Co, U.S.A., 21 Jewels (Bulova 10BM) |
Amigo, La Bulova, todo en USA, montaba muchos movimientos Suizos, y este que muestras parece ser un AS-1200 y familia, sus características según Ranfft son las siguientes: Un saludo
Fig. 1
Fig. 2
Fig. 3
Fig. 4
[SIZE=+1]Bulova 10BH[/SIZE]
Features
manual wind
sub second
Data
10.5''', Dm= 23.3mm
H= 3.6mm
17/21 jewels
f = 18000 A/h
power reserve 40h
Balance staff U1786
Stem W2087
Main spring / battery
Zf852, 1.30 x 9.0 x 0.10 x 290mm
Hands
1.25 x 0.60 / 0.22mm
Remarks
1948-1949
Breguet hairspring
only minor differences between 10BH, 10BM
Example, year: signature; shock device
1-2) 1950: L0, Bulova Watch Co, U.S.A., 17 Jewels
(Bulova 10BM)
3-4) 1952: L2, Bulova Watch Co, U.S.A., 21 Jewels
(Bulova 10BM)