Hello everybody. I would like to ask about this watch. Does anybody know what year was this produced? Which numbers on the back are related to the production year? Thanks in advance for your help.
Pix of the movement, and more about the provenance would help. At a glance, and solely by the aesthetic, I would guess 1960s.
I am not familiar with this version. In general, Eterna watches have 7-digit serial numbers on both case and movement. In the 1960s, these would be in the 4M or 5M range, moving to 6M in the early 70s. So I suppose the first 7 digits could be a serial number. If so, it would be from approximately 1974. I would like to see the movement.
The number is a reference number, not a serial number. Eterna stopped using serial numbers on their casebacks sometime in the 80s or before, maybe late 70s, and replaced them with the reference number like you see here. Just doing a quick Google search, here's an example on a modern Eterna: https://www.escapementmagazine.com/...er_Kontiki_Limited_Edition_1973_caseback1.jpg I have an Eterna from 1991 that starts with the 633 - not sure what it meant, but I've seen examples of the same from the 80s.