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: = 21.600 A/h.
• Power reserve: 44 h.

Versions:

• 1012:    N = 18.000 a/h.
• 1582:    minor modifications.
• 1677:    N = 21.600 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.