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AHS 40

AHS 40AHS 40


The AHS caliber 40 is a simple, 10 1/2 ligne pin lever movement, made in Germany in the 1950ies. It was available in different versions, among them the one displayed here with a pointed staff and double plate.

There's no shock protection and also no jewels in the movement; the gears run in brass bearings, probably a preparation for other calibers, which were partially equipped with rubies.

On the dial side, there's of course only a simple rocking bar winding mechanism and only a spring for the winding mechanism. This spring had to be replaced on the movement displayed here. Fortunately, it was compatible with other movements of AHS.

The movement displays hour and minute, and there's also a sub-second indication at position "6".

AHS 40 dial side viewAHS 40 dial side view

 Technical data

Number of jewels0
Escapementpin lever
Shock protection(s)none
Balance cock directionclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionFork, Escapement wheel, Fourth wheel, Third wheel, Center wheel, Mainspring barrel
FunctionsHour, minute, small second
Beats per hour18000
Image in Flume Werksucher 1962 26
AHS 40AHSAHS4010 1/2''''''AHS 400 Jewels, 10 1/2'''''', 18000 A/h, s


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