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Hi all, so I have a JLC k480/cow that was running strong for a while. 270 amplitude and +/-5 seconds a day. I noticed one day losing minutes every hour, but it continued to run strong on Timegrapher. I assumed it was a loose canon pinion so i tightened it. And the watch continued to keep time well for the day. Then I go to case it to finish up and the amplitude starts to drop in all positions but dial down (even dial down amplitude now is 230-240). And I don’t know where to go. I didn’t change or adjust anything jus the canon pinion. I tried reoiling capstones it helped a lot but still not running as strong. I had to replace the escape wheel in the original service a while back. And when I went to check for parts today I noticed there are two different escape wheels listed wondering if anyone could clarify that. And further instruct me on how to resolve this issue 1109_JLC 480.pdf

Hello! I recently acquired a Jaeger Lecoultre P478. There are two issues that I have. First, the snap caseback is warped so that it doesn't sit flush all the way around the case. It seems to fit well enough but there's still a gap which makes me wary. Is there a way to fix this? Second, the hands on it appear to be quite old but they don't look like other hands I've seen on the same model, could they possibly be original and I've just never seen one like this before or are they for sure replacement hands? Any help is greatly appreciated! Thank you!

So years ago my grandpa found this watch in a park while walking it during work (he worked as a cop in northern New Jersey) anyway he passed it onto my dad. Neither of them knew much about watches except they needed them to tell time. My dad gave it to me a few years ago when he saw i was getting into watch collecting. Any information would be great. I have been had it explained as art deco which im guessing is referring to the lugs. I haven't been able to find out much on it myself. Thanks in advance for your help!

As a first time Atmos owner, I was taken aback by the amount of force it required for me to slide the balance lock from right to left to initially unlock the balance after i had made sure the clock was perfectly horizontal via the bubble.the manual was not specific enough and i really don't know how much leftward force is required?!?furthermore, the manual said to "...press downwards a little and the slide the lever to the left to unlock..."i could not feel any difference when i press the lever downwards a little. it was as though nothing changed when i pressed it downwards. as a result, i had to simply slide the lever to the left.it was not a smooth action at all! it was a great deal of friction, and took a good amount of force. i didn't know if i were doing something wrong or that amount of force required was intentional by design so as to secure the balance??at almost the far left of the lever's movement (almost to the farthest left part), the balance became "loose" and freed. there was a "CLUNK" sound and the balance sort of became loose with some degree of dropping sound, like as though it was dropped maybe a few millimeters! i was startled as i knew the tiny wire (vertical hairspring) is very delicate so that "CLUNK" was scary. that plus the amount of force required to slide that unlocking lever were totally not described and unknowns to me. may i ask how much force it requires to slide the lock from lock to unlock (sliding it left) in general? is it a very smooth action? or is it an action that feels like there's friction as you slide the lever from right to left? since it then started (after the lever is moved fully to the left) without any further action on my part, and then now at around 3 days later, it is keeping good time (thus far), might you think it is ok or might you think there's damage?may i ask if my experience is normal? or did i goof and did something wrong and might have hard my brand new 560 Atmos? the manual is very opaque on this point. also, pressing down is not a very sure thing as i pressed down and i didn't feel much of any flex at all on that lever, so i started moving the lever left without any downward pressure.i think i might have DRAGGED that rounded hemisphere and might have DUG a groove along the underside where you see that dragged arc in your 2nd picture!how much harm have i done, may i ask?my fear is that dragging it might have done some irreparable harm!! furthermore, at close to the very end of the leftmost side of the lever's position, i see and hear a "clunk" sound when the balance is "released" and started danging freely. it was a "clunk" sound that is more than what i was hoping for, as i know the fine Elinvar wire is very delicate. May I ask if it is normal for the release at the very end (far left of the lever's position) to include such a release sound and almost abrupt motion? i was hoping that it wouldn't DROP the balance, even for a few millimeters.the good part is that now at 3 days after the initial setting up, it is keeping very good time.whether or not there is a groove DUG into the underside of that brass piece as the lever was traveling from right to left is an unknown to me at this point. disappointed at JLC's manual and at myself. but still, i'd like to know if i did anything wrong to educate myself.thank you in advance.