I just finished repair to an older Jauch movement out of an Emporer clock. It's running perfectly with a good beat and keeping accurate time. Just to fine tune it, I checked the BPH with my timer and it's reading 4060 on the button. The book says 3600 for the triple chime or 4571.4 for the "chain pull weight." The movement is stamped 77 10 75 and a possible serial number of 352662. Can anyone tell me what the correct BPH for this movement is? Pendulum is 64 cm. Thanks.
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