Fine and early, self-winding stainless steel chronograph wristwatch. Known to collectors as the four lines Daytona due to the fact that the words "Officially Certified" were left out for about one year of the 16520 production before being re-introduced. Produced shortly after the early floating Daytona were made, this early Zenith Daytona is part of the future collectible models. Très rare et superbe chronographe bracelet en acier. Boîtier rond. Couronne, poussoirs et fond vissés. Lunette acier avec échelle tachymétrique. Cadran blanc avec 3 compteurs, 4 lignes et 6 inversé. Mouvement automatique certifié chronomètre. Cadran, boîtier et mouvement signés.