This is the base version of the small 7 3/4 ligne movement, which was produced in the early 1950ies. Unlinke its direct relative, the ETA 2363 of my collection, the hairspring is fixated to the balance plate.
This movement is a very nice one, with its balance with screws and the bride screws, which fix the movement in the case.
|Number of jewels:||17|
Nickel screw balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Hairspring key|
|Winding mechanism:||yoke winding system|
Flume: 1962 2|
|Mentioning in literature (years):||1963 - 1969|