Valjoux 23-8350, Hammer spring

• VALJOUX original part in very good used condition.

• Fits cal: 23, 72, 72c, 88

Versions: 13'''

• 23: 30/45 min counter.
• 23c: 30/45 min counter, calendar.
• 72: 30 min, 12 hour counter.
• 72c: 30 min, 12 hour counter, day, date, month calendar.
• 88: 30 min, 12 hour counter, day, date, month calendar, moon phase.
• 90: sweep second, day, date, month calendar, moon phase.