Omega 18'''LOB

• Not for sale!

Manufactured from 1906 in quality A - C.

movement, no: 5 097 104 manufactured in aprox: 1918

Data: Omega 18'''LOB

• 15 jewels, open face caliber, sub second.
• Size: 18''' 40.61 mm.
• H: = 6.65 mm.
• N: = 18.000 A/h.
• Power reserve: -- h.
• Mainspring: 1,80 x 15 - 0,18 - 460 AT = Double brace and hole.

Versions: L = Lépine, O = Omega caliber, S = Savonette, A - C = Quality/Grade, NN = new negative wind/setting mechanism.

Grades:

• A: 7 jewels, flat hairspring, compensating balance.
• B: 15 jewels, Breguet hairspring, compensating balance.
• C: 15 - 19 jewels, regulator adjuster with screw or snail-star wheel, 7-8 collets.

Versions:

• 
  18''' 1898 - 1906
• 
  18''' P 1906 - 1932
• 
  18''' EP 1913 - 1932, quality Genève