Omega 860-1112, Yoke spring

• OMEGA original part, new without factory packaging.

• Omega part no: 320-1112

• Fits cal: 320, 321, 860, 861, 865, 910, 911, 920

Data Omega 861 (Base caliber: Lemania 1873).

• 17 jewels, manual wind chronograph.
• Size: 12''' 27 mm.
• H: = 6.87 mm.
• N: = 21600 A/h.
• Power reserve: 40 h.

Versions:

• 860: 17 jewels, base calibre, same as Lemania 1872.
• 861: 17 jewels, 12 h. counter, same as Lemania 1873.
• 862: 21 jewels, 12 h. counter.
• 863: 21 jewels, 12 h. counter, jubilee edition.
• 864: 21 jewels, 12 h. counter, jubilee chronometer.
• 865: 17 jewels, only 60 s. counter, chronostop.
• 866: 17 jewels, like 860 with date, moon phase.
• 867: 21 jewels, 12 h. counter, jubilee chronometer, skellettonized.
• 910: 17 jewels, 12 h. counter, 2nd time zone, 24 h. display.
• 911: 17 jewels, 12 h. counter, 2nd time zone.
• 920: 17 jewels, only 60 s. counter, date, chronostop.
• 930: 17 jewels, like 860 with date.