MST 371BrandMSTCaliber371Size10 1/2FunctionSCVersionHands0,90x1,50Stem6402 ( 2723 )Stem (subs.)Stem (2 pce)Balance staff29508Balance staff (subs.)29607 INCA / 30005 SSRMainspring (subs.)1,5x9,0x0,11Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.227BSweep second wheel603196300227371260BMinute wheel- 403096300260371401Winding stem8026402410BWinding pignon293296300410371415BRatchet wheel172996300415371445BSetting lever spring96300445371703BEscape wheel -pinion 1 lower end-piec.- 654496300703371723Balance staff, pivoted80229607723Balance staff ST -shock-absorber80229508