I just picked this up needing a bit of TLC...
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... and I can't get it out of the case to see what's up

The 'chronostop' button has me baffled

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Anyone know how to remove this (properly, without having to butcher it) ?
I can see there are 2 pins between it and the case: One is (very) recessed and can't be pushed; the other looks like it was threaded in and then cut off ... there's not enough stub to get a hold of to twist it out (if indeed it was threaded in).

Can't find anything on the wibbly wobbly web. Any help/guidance appreciated.