Wynand sent in this Longines Ultra-Chron for a service. You have to love these watches. Not only do they look great, but they have a snappy date, are automatic, and, last but not least, tick with 36,000 bph!
This could look a bit better.
Looks like somebody deformed the case back gasket when putting the watch together, so it was never even water resistant in the slightest.
The movement is held in place by a ring that grips into the case. Somebody put a plastic gasket in there, and it doesn’t belong there at all. He probably put the retaining ring into the wrong groove…
Dial and hands are in great shape.
Bottom plate with date ring.The automatic winding mechanism.
Nothing I can do about the mainspring, as you can’t open the barrel. I put it to the side, as I don’t want to put it through the cleaning machine. The cleaning fluid would just build up inside, and not flush out.
The components of the snappy date changer.
In the bottom right basket, you can see the retaining ring that holds the movement in the case.
The base movement is back together, and beating 10 times per second!
The barrel arbor screw that was in place was too small, and slipped when I tried to tighten it. I find a 0.8mm thread screw in my spare parts drawer, and put it in.
Considering that I didn’t change the mainspring (you can’t get those barrels for love nor money), and that the movement has just been put together, this is looking rather good.
Now I start on the bottom plate.
The movement back in the case, and sitting firmly without the plastic ring that was there before.
Great looking watch – got to get one of these one day!