AS 1677 (Dugena 2131)

AS 1677 (Dugena 2131) | - The Movement Archive

AS 1677 (Dugena 2131)


The AS 1677, which was used by Dugena with their own caliber number “Dugena 2131”, ist the successor of the AS 1012. Its size of 5 1/2 x 6 3/4 lignes stayed the same as well as the plate layout and shapes of the plates. The differences to its predecessor are in the balance and escapement mechanism: The hairspring is connected to a moveable stud, which allows precise regulation of the synchronized beating and the balance now beats with contemporary 21600 A/h.

Of course an Incablock shock protection is used on the balance cock. On the dial side, another, unknown, shock protection system, technically similar to Incabloc, is used.

The layout of the gears stayed the same with the directly driven center minute gear and the escapement wheel partially running below the fourth wheel jewel.

AS 1677 (Dugena 2131): base plate

base plate

On the dial side, there are hardly any visual and no technical differences at all to the AS 1012. Of course, a yoke winding system is used here, too.

AS 1677 (Dugena 2131): AS 1677 dial side

AS 1677 dial side

Technical data

Size:5 1/2''' (measured: 13,0 x 15,2mm)
lift angle:52°
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Nickel screw balance
Glucydur screw balance (two legs)
Shock protection(s): Incabloc
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:3 hole(s)
References: Flume: K2 g.33
Mentioning in literature (years): 1963 - 1971

Usage gallery

AS 1677 (Dugena 2131): Dugena ladies' watch

Dugena ladies' watch