this is a very rare Zenith Chronometre 40T from the mid 1960s in mint condition. The beautifully shaped 33mm calatrava-like steelcase is still supersharp and covers a flawless eggshell-white dial with lines texture and overwhelming details, like the supercool 40T logo under the handset. All parts about the watch , like domed plexi and star signed crown, are the originals. the handwound zenith Chronometer caliber 40T is working great, not being in the need for a service currently. this beautiful collectors watch comes on a brown leatherstrap.