In the 1920ies, wristwatches for ladies were still unkommon, rare and thus expensive.
The Etera 82 with a diameter of 10 1⁄2 lignes dates from that era and is a high quality, but very typical of the time movement, which was made for ladies’ watches, often in gold cases.
The fact that the base plate is brass-colored or yellow-fired was common at that time, but it is also recognizable that the processing was very elaborate, because for each wheel, and also for the balance, several steps from the massive base plate were milled out.
Of course, there are ruby bearings for all important bearings, so that this movement uses 15 jewels, the top amount of that time.
It’s noteable, that the gear train is built in the way, that the seconds wheel is located at 9 o’clock, opposite of the crown. This construction was used previously for necklace or pocket watches with a crown on the top (12 o’clock) and a decentral second hand at 6 o’clock.
The gear train is a very common one with central minute wheel, third wheel, seconds wheel, steel escape wheel and pallet lever.
The bimetal screw balance is very beautiful and oscillates with 18000 A/h. It can compensate the temperature deviation of the steel hairspring.
On the dial side, there’s already a native yoke winding system. For the 1920ies, this was more or less bleeding edge.
|Number of jewels:||15|
bimetallic screw balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Long regulator arm|
|Construction type:||solid construction|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||2 hole(s)|
|Size:||10 1/2''' (measured: 22,7mm)|