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Durowe 451 (INT)

Features
manual wind
sweep second

Data
10.5''', Dm= 23.35mm
H= 4.0mm
17 jewels
f = 21600 A/h
power reserve 40h

Remarks
1968-1970

family:
sweep second 10.5''':
451 : -
451-1: 12h- and 24h display
451-2: date
451-3: day, date
sub second 11.5''':
470 : -
470-1: 12h- and 24h display
470-2: date
470-3: day, date
sweep second 11.5''':
471 : -
471-1: 12h- and 24h display
471-2: date
471-3: day, date
471-4: minute stop feature

Example, year: signature; shock device
ca. 1965: 17 Jewels; Duro-Swing
(Durowe 450, 18000A/h)

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email: info@ranfft.de
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