Omega 340-1106, Winding stem

• OMEGA original stem, without factory packaging.

• Thread: 0.90 MM.

• Fits cal: 340, 341, 342, 343, 344, 350, 351, 352, 353, 354, 355

Versions with sub second from 1949.

• 330: D=30,10, shock protected, antimagnetic, H=4,55 mm.
• 331: D=30,10, centenary chronometer, antimagnetic.
• 332: D=30,10, antimagnetic, redesign 331.
• 333: D=30,10, exenter regulator, chronometer.
• 340: D=28,10, shock protected, antimagnetic, H=4,80 mm.
• 341: D=28,10, centenary chronometer, antimagnetic.
• 342: D=28,10, shock protected, antimagnetic, redesign 340.
• 343: D=28,10, exenter regulator, chronometer.
• 344: D=28,10, swan neck regulator.

Versions with center second from 1949.

• 350: D=28,10, shock protected, antimagnetic, H=5,40 mm.
• 351: D=28,10, shock protected, antimagnetic, redesign 350.
• 352: D=28,10, exenter regulator, chronometer.
• 353: D=28,10, shock protected, antimagnetic, date, H=6,10 mm.
• 354: D=28,10, swan neck regulator.
• 355: D=28,10, date, redesign 353.