Gents Ulysse Nardin Ludovico Perpetual in 18k on crocodile strap. Auto w/ subseconds, date, day, month and perpetual calendar. Ref 336-48. Fine Pre-owned Ulysse Nardin Watch. Certified preowned Ulysse Nardin Ludovico Perpetual 336-48 watch is made out of yellow gold on a Black Strap band with a 18k Deploy buckle. This Ulysse Nardin watch has a 39 x 43 mm case with a Tonneau caseback and Black Roman Numeral dial. It is Gray and Sons Certified Authentic and comes backed by our 12-month warranty. Each watch is inspected by our certified in-house Swiss-trained watchmakers before shipment including final servicing, cleaning, and polishing.