ETA 1010-721N, Balance, complete

• ETA original balance in factory sealed packaging.

• 
  Fits cal: 1010, 1011, 1013

Data:

• 15 jewels, manual wind.
• Size: 7,75''' 17,2 mm.
• H: = 2,85 mm.
• N: = 18000.
• Power reserve: 43 h.

Versions:

• 1010: sub second.
• 1011: center second.
• 1013: no second.