Ulysse Nardin caliber UN-153

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Brand:Ulysse Nardin
Reference:UN-153
Base: Ulysse Nardin UN-150
Movement:Automatic
Display:Analog
Jewels:53
Reserve:52
Frequency:28800
Date:Annual Calendar, Date, Month
Chronograph:Chronograph, Column wheel
Hands:Hours, Minutes, Small Seconds

UN-153 description

30-minutes, 12-hours and small seconds registers.
Annual calendar module by Ludwig Oechselin, capable of backward/forward setting.
Escapement wheel, balance spring & anchor in Silicium.
Month indicator at 9:00.
Date at 6:00.