AS 1977-2

Data: AS 1977-2

• 
  17/21 jewels, manual wind.
• 
  Size: 5,5 x 6,75''' 13 x 15,15 mm.
• 
  H: = 3,60 mm.
• 
  N: = 21600.
• 
  Power reserve: 44 h.

Versions:

• 
  1012: N = 18000 a/h.
• 
  1582: minor modifications.
• 
  1677: N = 21600 a/h.
• 
  1777: minor modifications.
• 
  1977: new regulator, stronger mainspring.
• 
  1977-2: new balance and barrel.
• 
  1977-2: new winding gear.
• 
  1977-4: balance cock and regulator new.
• 
  1977-5: new click.
• 
  1978-2: new winding gear.