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AHO 1057

AHO 1057AHO 1057


A true rarity is the AHO caliber 1057, one of the rare handwinding movements from August Hohl in Pforzheim, Germany, who sold watches under the label "Constanta". Even when these movements can compete with swiss movements, not many of them are still available on the second hand market.

The 10 1/2 ligne movement (measured 10 1/4 lignes) impresses by its classical construction and most of all by its sandwich construction, which was required for the indirectly driven center second hand. The angled plates are visually very appealing.

The screw balance is secured in two Super-Shock-Resist protection systems; on the dial you find the classic yoke winding mechanism. Both are typical features of a "better" movement.


AHO 1057 dial side viewAHO 1057 dial side view


 Technical data

Number of jewels17
EscapementAnchor with pallets
BalanceNickel screw balance
Shock protection(s)Super Shock Resist
Balance cock directionclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Center second pinion
Center wheel, Mainspring barrel
FunctionsHour, minute, second
Beats per hour18000
Image in Flume Werksucher 1958 g.10
AHO 1057AHOAHO105710 1/4''''''AHO 105717 Jewels, 10 1/4'''''', 18000 A/h, SCI


Usage gallery

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