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AS 1677 (Dugena 2131)

AS 1677 / Dugena 2131AS 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.

base platebase 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 dial sideAS 1677 dial side


 Technical data

Number of jewels17
EscapementAnchor with pallets
Shock protection(s)Incabloc
Balance cock directioncounterclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Center wheel
Mainspring barrel
Winding mechanismyoke
Setting lever spring3 holes
FunctionsHour, minute
Beats per hour21600
Size51/2''' (measured: 13,0 x 15,2 mm)
Image in Flume Werksucher K2 g.33
AS 1677ASAS16775 1/2''''''AS 167717 Jewels, 5 1/2'''''', 21600 A/h


Usage gallery

Dugena ladies' watchDugena ladies' watch