AS 1526

AS 1526 | - The Movement Archive

AS 1526


The AS 1526 is the larger version of the AS 1525. The only difference between these two is the base plate, which measures 11 1/2 lignes here, while on the AS 1525, it measures only 10 1/2 lignes.

With a height of only 2.8mm, it builds very flat, which corresponded to what fashion demanded at the time.

This simple windup movement was quite popular in then 1960s and was honoured many times on the german quality check “Staatliche Qualitätsprüfung für die deutsche Armbanduhr”.

AS 1526: base plate

base plate

Of course, all important bearings contain rubies. Only the mainspring barrel and the base plate bearing of the minute wheel use metal bushings. To achieve the number of 17 jewels, the movement side escape wheel bearing uses a cap wheel.

AS 1526: gear train

gear train

The gear train is the classical one: The mainspring barrel drives the center minute wheel, followed by third wheel, seconds wheel and filigree steel escape wheel.

AS 1526: side view of the gear train

side view of the gear train

The specimen shown here uses a screw-less Glucydur balance with three legs, which was top notch at that time.
Of course, the balance wheel is shock protected in two Incabloc bearings. It beats slowly with 18000 A/h can can be regulated only directly at the hairspring key, which makes the adjustment a bit difficult.

In the lab

The specimen shown here came without case, but with visible water damage, dirty and gummed into the archive and got a simple service treatment.

Timegrapher result

Although the regulation was quite tricky because of the lacking regulator arm, the quite constant results on the timegrapher show the high quality of this movement.

horizontal positions
dial up +18 s/d 252° 0.2ms
dial down +17 s/d 264° 0.0ms
vertical positions
crown right (12 up) +16 s/d 217° 0.1ms
crown up (3 up) +-0 s/d 232° 0.3ms
crown left (6 up) +-0 s/d 218° 0.1ms
crown down (9 up) +17 s/d 219° 0.3ms

Technical data

Caliber base:AS 1525
Size:11 1/2''' (measured: 25,2mm)
lift angle:52.23°
Number of jewels:17
Escapement:Pallet lever
Balance types: Glucydur anular balance (three legs)
Shock protection(s): Incabloc
Balance bearing / direction hairspring:Clockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:3 hole(s)
References: Flume: 1962 9
Mentioning in literature (years): 1963 - 1970
Inventory number:20061

Usage gallery

AS 1526: Luxus gents watch (case missing)

Luxus gents watch (case missing)

This movement is a kind donation from Philipp Porter to the movement archive. Thank you very much!