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
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"
|dial side view|
|Number of jewels||
Anchor with pallets|
Nickel screw balance|
Super Shock Resist|
Balance cock direction||
Long regulator arm|
Escapement wheel, Fourth wheel, Third wheel, Center second pinion
Center wheel, Mainspring barrel
Hour, minute, second|
|Beats per hour||
|Image in Flume Werksucher ||
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