This is a very early ladies’ movement from ETA with center seconds. They are driven indirectly by a large second wheel, which has the exact size and tooth count, as the minute wheel below.
Unfortunately, this movement was not equipped with an Incabloc shock protecion, but with a pretty simple one, and so, the balance wheel is broken.
|Number of jewels:||21|
Nickel screw balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Long regulator arm|
|Functions:||hour, minute, second|
Flume: 1949 I 33|