On any given day, you can find on Ebay a number of "Eterna-Matic 5-Star" watches (and case/bracelet/dial kits), allegedly NOS, allegedly from the 1970s. These are usually being sold from Asia and have the following features:
According to information I received from Eterna this year (from Mr. Laurent - to whom I sent links to some listings), these are counterfeits (or, I guess, frankens), starting with the wrong movement. "This model" (and it's not clear from his email whether it is the case or the 1000 line) was supposed to come with an ETA 2878 - a day/date movement that was never COSC certified.
- Dial is usually a degrade (brown, black, grey, brown) with "Eterna-Matic 1000" at the top and "Five-Star" at the bottom.
- "T" marks around Swiss - and have no lume on the dials!
- Oyster-style case with 19mm bracelet attachments and ridged bezel
- Straight ETA 2824 movements (usually gold-plated rotors with "adjusted 6 positions" printed on them, sometimes not).
Bear in mind that Eterna (like a lot of Swiss mfrs) made its dials, cases, and bracelets in Thailand, which makes it pretty easy for people to assemble parts into what look like genuine watches.
A couple of other notes
Bear in mind also that Eterna did not have the kind of visibility to motivate counterfeiting until it remade itself as an upscale brand.
- I believe the cases being used for these are actually those from the Octo Missilemaster, which does take a 2824 - but the case may be correct..
- Eterna's 2824 variants (12824 if it's old, 2824-2 if it's newer) are generally decorated on the bridges. The version in these watches is generic.
Verb. sat. sap. - but all of that said, if you like the completed watch, it's not bad looking. It is a little bit chintzy in its feel, though.