UNITAS 257

BrandUNITASCaliber257Size18 1/2-21FunctionVersionHands1,15x2,00Stem9026Stem (subs.)Stem (2 pce)Balance staff35803Balance staff (subs.)37001Mainspring (subs.)1,5x17,0x0,21Mainspring (subs.)Battery

Watchparts

Part NocaliberdescriptionoriginalArtno.
401Winding stem8029026
723Balance staff, pivoted80237001
723Balance staff ST -shock-absorber80235803
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