Question about Eterna-Matic KonTiki ref. 130T caseback

Hello everyone,


I’m currently considering the acquisition of an Eterna-Matic KonTiki that seems to be a reference 130T in stainless steel. The dial is the more classic silver/white version with baton markers, not the early “black dial with large lume triangle” style (i wish ^^)

What puzzles me is the caseback: it has the KonTiki raft, but it is lightly engraved rather than the usual applied/embossed medallion most KonTikis are known for.


From my research, I understand that the very first generation black dial KonTikis with the large lume triangle did indeed come with engraved casebacks. That’s why I’m wondering:

• Did some of the later 130T models also originally come with engraved casebacks?
• Or is it more likely that this watch has a swapped caseback from an earlier production?
• Does any catalog or documentation clarify which caseback type corresponds to which dial variant?

Any advice or insights before I go ahead with the purchase would be very helpful.


Thanks a lot in advance!
Alex

I just realized my message was ambiguous. My vote is that this is the original caseback, not swapped--I'm not even sure the engraved vs. medallion casebacks are swappable in the first place.

I just checked my own 1st issue Kontiki and as you can see, the caseback number is in the same range. It makes sense there would be a standard (i.e. engraved) caseback used at the time. That's just my £.02, though!

Thanks a lot

Interesting piece. From what I know, the engraved caseback was used on the earliest KonTiki models, before Eterna switched to the more common medallion style.
So it’s not necessarily a red flag. It could still be correct for an early 130T, even with a silver/white dial, especially if everything else looks consistent.
Of course, a swapped caseback is always a possibility with vintage watches, but I wouldn’t jump to that conclusion just based on the engraving alone.
I’d mainly check if the overall watch (dial, hands, movement, wear) feels coherent. If it does, the caseback might well be original...

The Kontiki shown is with no doubt a Kontiki from the first series, produced between 1958 and 1960.

It came in two versions: with indices (like yours) or with a (3)-6-9-12 dial (like Dan S's). Available as a date and a no-date version.

Only the first series featured the Kontiki engraving. The gold medallion was introduced with the Super-Kontiki in 1960.

Your Kontiki, with case number 43xxxx, dates from 1959.

Here are the four different versions.