Zenith Cal. 135 18k Yellow Gold Mechanical Port Royal Watch w/ Original Band

Zenith Cal. 135 18k Yellow Gold Mechanical Port Royal Watch w/ Original Band Caliber #135 Movement Serial #46636XX Case #687879 Year of Manufacture: 1954 - 1960 (2nd Series) 18k Yellow Gold Case 35 mm in Diameter (37 mm w/ Crown) Lug-to-Lug Distance = 42 mm Lug-to-Lug Width = 17 mm Thickness = 10 mm Gold Ornate Dial w/ Gold Tic Marks and Hands (M + H) Includes Gold Second Subdial Labeled "CHRONOMETRE / ZENITH / Port Royal" 30 mm in Diameter 18k Yellow Gold Original Link Two-Piece Band Total Length = 7.75" Width at Case = 17 mm Width at Clasp = 13 mm Total Mass = 79.4 grams Does Not Include Original Box or Papers Amazing, Collectible Timepiece!