I have a soft spot for these M90 movements. They are slightly off the beaten track and always struck me as a bit under-appreciated, which normally means not too expensive. I'm happy to have bought one, and wear it with pleasure.

I was following this one, more out of curiousity than anything else. In my view, it's principle attribute was the vintage waterproof case (which seemed a bit dinged) and for the rest, nothing exceptional. Clearly several other people saw much more than I did - can anyone cast some light on this mystery?

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Conor