Helvetia 830

Helvetia inhouse movement with strange designed bridges? The movement has an extra train wheel to make space for a higher barrel and mainspring, the Helvetaia engineers was the first to think of this (and the last).

Technical data Helvetia cal: 830

• 
  17/21 jewels, manual wind, sweep second.
• 
  Size: 11.5''' 25.60 mm.
• 
  H: = 4.3 mm.
• 
  N: = 18.000 A/h.
• 
  Power reserve: 44 h.
• 
  Mainspring: 1.40 x 10 - 012 - 290 mm.

Versions:

• 
  830: manual wind.
• 
  837: automatic.
• 
  838: automatic, redesigned from 837.
• 
  844: automatic, date.
• 
  845: automatic.