Longines 8.68ABC-440, Yoke spring

• LONGINES original part, NOS without factory packaging.

• Fits cal: 8.68ABC, 8.68ABC S
  

Data: Longines 8.68N

• 17 jewels, manual wind, sub second.
• Size: 8.75''' 19.40 mm.
• H: = 3.25 mm.
• N: = 18.000 A/h.
• Power reserve: 38 h.

• Mainspring: 1,30 x 7 - 0.065 - 280 (Prima: 130D 28BA).

Versions: The 8.68 was made in a lot of versions, with or without shock protection, with different crown and ratchet wheels, polished setting mechanism parts or not.

• 8.68N: sub second.
• 8.68NS: center second.
• 8.68ABC: sub second.
• 8.68ABC S: sweep second.
• 8.68L: same as 8.68Z, winding gear under the barrel bridge.
• 8.68LN: same as 8.68N, winding gear on top of the barrel bridge.
• 21.19: oval plate, share parts with the 8.68N