MARVIN 525 Brand MARVIN Caliber 525 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.407Bclutch wheel95800407525410BWinding pinion with square hole95800410525