So, I've now got two diving chronos with this case, a Le Jour Triton and a Limit. I know that these cases are also found in a number of classic 1960s diving chronos, the Ollech Wajs Navichron, the Jenny Caribbean, and the Oriosa most commonly. I'd love to see other ones using the case.

And also, two other questions:
1.) the Avia Marino seems to use this case, but with a very different caseback (no spear-fisher). Is it still a ref. 2002?
2.) Does anyone know any more about this case and why it was so prolific?

Lastly, a PSA: when you try to unscrew this, or any faceted caseback, please don't orangutan it with a case-wrench as someone apparently tried to with both of these. The correct tool is a friction ball (cost £2) or, in dire emergency, a shot glass with strong double-sided tape.

Note the knurled pushers on this one, a very unusual feature.