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Ulysse Nardin Marine Chronograph Annual Calendar, ref. 513-22 Big Date

Ulysse Nardin Marine Chronograph Annual Calendar, ref. 513-22. 40mm x 13.4mm SS case with the back secured by six fine screws, water resistant to 100 meters. This one has a black dial with black Arabic numerals, chronograph subregisters at six and nine, quickset large date at twelve, and month at four. The watch is on its original UN rubber strap with a UN deployant buckle, sapphire crystal, and screw down crown and pushers. Powered by  UN cal 51 (base cal Dubois Dépraz 4900) automatic movement.  Mint with original box, original warranty papers and service record of a recent service by UN amount to over a US $1000 dated mid 2011