The shiny silver colored, with small stripes decorated Eppler 8 was launched in the early 1960ies and was not yet so much rationalized than its successors.
It has got an indirectly driven center second, which is ruby beared under a cock on one side, and protected against wabbling by the help of a small spring.Video on YouTube
The Eppler 8 is made in a pillar construction, it is a pin lever movement with one story construction plus indirectly driven center second on the top plate.
The non shock protected ring balance is beared in two ruby pairs. It beats with contemporarily slow 18000 A/h and regulates a traditional pin lever movement.
The lever is ruby beared, which leads, together with the upper side center second ruby bearing to a total of 7 jewels.
The movement is pretty thick, due to its rather large gears and trains. This is pretty common for pin lever movements.
You see the brass bushings, in which the gears are beared. Later Eppler movement only used simple drill-holes in the plates.
On the dial side, you can easily see the Eppler rocking bar winding system and the click mechanism, which are connected by the same large spring.
In the lab
Timegrapher resultFor a pin lever movement of more than 50 years old, the rates are, except the slip-up at "9 up", are absolutely ok, and during daily wear, the average deviation should be way less than one minute. Really not bad for a pin lever movement!
|dial up||+20 s/d|
|dial down||+25 s/d|
|crown right (12 up)||-50 s/d|
|crown up (3 up)||-15 s/d|
|crown left (6 up)||-40 s/d|
|crown down (9 up)||-100 s/d|
|Number of jewels:||7|
Nickel anular balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Long regulator arm|
|Construction type:||pillar construction|
|Winding mechanism:||rocking bar winding system|
|Setting lever spring:||4 hole(s)|
|Functions:||hour, minute, second|
|Size:||10 1/2''' (measured: 22,9mm)|
Flume: 1962 25|