Restoration of a vintage Longines Automatic Watch

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Hi guys, today I show you a wonderful Longines from the 70s, golden steel case 34mm in diameter without crown, with a beautiful Longines manufacture caliber l 890.1 automatic. The watch was bought as not working, once it arrived I immediately realized the problem, one of the two mainsprings was broken. The watch case had very damaged gilding in several places, after polishing it was also restored. After the service the watch started working again with impeccable precision, I'm happy to have it in my collection.
I hope you enjoy the video.
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Опубликовано:

17 сен 2023

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Комментарии : 9

@chrisbtoo 9 месяцев назад

I recently got a 1977 Admiral (also an L890.1) unexpectedly in a lot I bought on an auction site with terrible photos. It was a non-runner, but thanks to this video I managed to figure out that its only problem was a misalignment of the pinions at the interface of the automatic and manual winding works, and now it's running and so far seems to be keeping reasonable time. Great video, thanks!

@dewaynehowse231 10 месяцев назад

This 890.1 movement is beautiful. One of the best looking that I have seen.

@WilliamYaughn 10 месяцев назад

What an unusual architecture for the watch. Never had the pleasure of seeing things like a double barrel mainspring.

@hockeyrd99 6 месяцев назад

Great job. Question.. when you were winding the watch without the rotor on, the bearings were spinning 41:21. Is that normal? I remember a 27 jewel Elgin I worked on; I read documentation that said it would be normal for the rotor to spin while winding. I know if it happens with something like a vintage Omega, it may mean a bushing in the rotor platform or reversing wheel is shot.

@watchrestorationchannel1061 6 месяцев назад

The bearings rotate because they have no oscillating weight. With the rotor mounted by turning the crown the rotor does not turn. I don't know if this is normal, it's the first time I've worked on this caliber. I'm interested too, I have to read about it.

@LordotU 10 месяцев назад

Many watchmakers do not advise to wash balance and pallete fork in isopropyl alcohol, cause it may dissolve shellac which jewels are glued on

@watchrestorationchannel1061 10 месяцев назад

This happens if you use aggressive products such as tibi, if you immerse the fork for 10 minutes nothing happens. It has never happened to me that shellac dissolved with isopropyl alcohol. You can also use hexane for rinsing. I repeat, 10 minutes in isopropyl alcohol does not cause damage, if the components were to remain for longer I don't know if what you say happens.

@hockeyrd99 6 месяцев назад

@@watchrestorationchannel1061 I just use the alcohol to displace the watch cleaning solution (which in my case is mixed with water) after I clean the part. But I only rinse for 15 seconds or so. I don't believe longer is needed. Like you said, it won't cause damage.

@watchrestorationchannel1061 6 месяцев назад

@@hockeyrd99 I have done many tests, the alcohol only starts to dissolve the shellac after 30 minutes. Remaining in a time range of 10 minutes nothing happens. You can do a test: insert a flake of shellac into the alcohol and measure the time with a stopwatch, like I did.