Quote:
Originally Posted by willski
I've had problems with my 15300 which has the 3120 caliber.
However, do note the 15202 does not have the 3120; it has the 2121 which was originally designed by JLC and used by AP, VC and also PP.
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I’ve heard the 2121 can be a bit finicky as well. They’ve basically taken the 2120 movement and modernized it... tried to update it. It was always a finicky movement because of its incredible engineering and thinness (it is truly a JLC masterpiece and now a Audemars grail movement). It’s just expensive to service and is not super durable.
BTW, the CB has been known to have a little issue with mainspring twisting on the post when fully unwound so don’t jostle it around much when it’s wound down.
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