Mido impulse purchase

JwRosenthal

Lovely looking Mido Ocean Star, most likely around 1960-63, may have the star in the back which is always a plus. Movement is Eta based. They are fabulous watches.
Make sure your watchmaker knows how to take these apart. They require a crystal lift and the crown be rotated so Mido reads horizontally (like on lined rules), then the movement tips out. It is not a split stem that you pull out.
Second track is on the rehaut which is inside the inner rim of the crystal (these crystals are proprietary and long NLA so be careful) so reassembly requires that the pips and hash marks be perfectly aligned when the crystal lift releases- which is not easy as they tend to creep a little- so may take a few tries. If the pips aren’t realigned properly- they will look crooked.

JwRosenthal

NLA=No Longer Available. The rehaut is also the tension ring for the crystal. The pips are radium on these early ones. I have found these crystals on eBay in the factory packaging but they are very specific for size so if you break it, you need to measure the old one to get the correct replacement. They will be marked on the package with size, state radium, and say white(silver), black or gold rehaut. The crystal is also signed in the middle (you can see it under the crystal with a loupe).
The movement is made by ETA so any watchmaker can service them and parts are abundant. The movement will be marked Mido, but it is an Eta reference and will be stamped under the balance. If he says he can’t get parts for it- find another watchmaker.
Just making sure he knows how to get it out (mention the crown position) and it’s easy. I would also ask if he could just measure the crystal for you- even though it is fine, and see if you can grab a spare on eBay when they do pop up. I try to have spares for all of my favorite watches that aren’t available anymore. I haunt eBay looking for spare parts while I have my morning coffee and have saved searches.
Enjoy!