Longines balance staff 23Z 23ZD 23ZN 23ZS 23ZSD original (Regular or Incabloc, not for SuperShockResist)

Longines balance staff / axe de balancier

Original Longines part

Neuf de stock / New old stock

Choose your version in the list on top of this offer

Pour calibres / for all following calibers :

23Z  23ZD  23ZN 23ZS 23ZSD Regular

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23Z 23ZD 23ZN 23ZS 23ZSD   Incabloc, height 314 (not for SuperShockResist which is height 308)