1950's Zenith Chronometre Cal. 135 in all Stainless Steel Case. Mint Original Condition – Corr Vintage Watches
Zenith - Zenith Cal 135 Observatoire Chronometer by Kari Voutilainen and Phillips.
Zenith, Kari Voutilainen and Phillips Join Forces to Revive a Historical Chronometer Movement (With Live Photos) | WatchTime - USA's No.1 Watch Magazine
Zenith, Kari Voutilainen, and Phillips Unveil Unique Caliber 135-O With Salmon Dial & Niobium Case | WatchTime - USA's No.1 Watch Magazine