No it's really a pretty standard movement. Looking at pics I see that some are jeweled at the center wheel and some not, the ones I've worked on have been older and non jeweled there, and in a couple of cases the center wheel upper pivot was quite worn and the bushing trashed. But otherwise it's just a very small movement. There's a good chance you might need to do a little escapement adjusting, they tend to come from the factory with fairly heavy locks and you might not get a full healthy amplitude without a little tweaking. You can't put a stronger spring in, the barrel is very small and is already struggling to give the 38 hours of power reserve. Any thicker/longer/shorter spring quickly eats up almost a full turn of wind.