the hand-wound caliber Alpha is at work—reliably and with the highest precision
The lower row showcases round brilliant diamonds totaling 0
beautifully showcased against a vibrant blue enamel backdrop
the diamond is laser inscribed on the girdle for authenticity and is graded Excellent in cut
while his signature and the name of his father’s workshop
Cosmograph Daytona HamiltonCollections_Facets the hand-wound caliber Alpha isOyster, 40 mm, Oystersteel and yellow gold Reference 126503 Calibre 4131, manufacture Rolex Model case Oyster, 40 mm, Oystersteel and yellow gold Power reserve Approximately 70 hours Bezel Fixed, with engraved tachymetric scale, in yellow gold Bracelet Oyster, three piece solid links Water resistance Waterproof to 100 metres 330 feet Dial Golden, black counter rings Movement Perpetual, mechanical chronograph, self winding Certification Superlative