Eterna watches serial numbers

Theodore remained on the board of directors after retirement until his death in Eterna produced many innovations in their history: the smallest production wristwatch with a Baguette movement in , an eight-day alarm watch in the s and their first automatic watch in In , Eterna advanced self-winding watch technology with the development of the Eterna-matic automatic movement.

The use of five strategically placed ball bearings made the movement very efficient and significantly reduced friction and resistance on the oscillating weight that wound the mainspring.

Its popularity was such that in Eterna adopted the image of five balls as its corporate logo. After , Eterna was sold several times. In , Eterna produced a range of watches marketed under the Porsche Design label. In the s Eterna resumed manufacturing watches and creating the Calibre in The ultra-thin automatic was produced for the th anniversary in Thus, we would like to inspire a more secure and trusting experience upon purchasing a vintage time piece.

That is why we, unless otherwise noted, offer a full 1-year mechanical warranty on all of our watches. Eterna-Matic — Automatic — Anno Eterna-Matic — Automatic — Anno Collectors item. Eterna-Matic Date — Automatic — Anno Eterna Sweep Second — Manual — Anno Search here. Though in the periode dating from to the reference number on Certina watch carried an encrypted message giving away, which calibre the watch was equipped with, which material the case was made from and which watch model you are dealing with.

Together with a reference number, the brand Omega placed their serial numbers on the inside of the backcase. One serial number indicates in which year or periode the watch was produced while the other number the reference number indicates which model or serie the specific watch belongs to.

In some cases, such as the watches produced by the brand Eterna, serial numbers were not used as markers to know the year of origin.

Instead Eterna made sure we can date watches since their calibers were only used in short periods of time. When you have got the serial number then look it up in our Longines serial number matrix. Search Everywhere Threads This forum This thread. Search titles only. Search Advanced search…. Everywhere Threads This forum This thread. Search Advanced…. Events Events List Event Calendar. We are aware of the performance issues with the forum. These are due to problems with Comcast's shared lines in the Columbia, PA area.

On December 15, we signed a contract to bring a dedicated fiber line to the forum servers. It should take somewhere between 30 and 90 days to install.