Selling here is one of my flagships in my private collection, the Zenith 135 Port Royal chronometre. The Zenith cal. 135 does not need much words here, so I will summarize in some short words from Monochrome: The case is 36mm without crown, the movement is running good and keeps time. I have managed to buy two excerpts from vintage magazines (1958), showing the exact model of the watch. Please refer to the photos. Asking for $4500 shipped. Offers are welcome, but please be reasonable. Thanks.