I need a complete balance assembly for this little clock movement but I cannot find the Calibre, I believe the maker is Jaccard Freres as it is marked JF in a lozenge and France on the winder plate. It is pin pallet and measures 21 ligne on dial plate and 20 on bottom plate. Between plates it is 6.3 mm. The nearest I can get to similar is europa 101 movement on page 339 Of bestfit. any help or guidance appreciated, thankyou.