Some fantastic guesses there - I've just been comparing swatches and it really is very like Vert Atlantide, but without the shimmer. There are also definite similarities to Diamine Green Umber. These are both inks I use a lot - in fact one of my other old Pelikans is permanently filled with Green Umber, which is a near perfect match to its particular binde.
None of these are this ink, however.
@DrP - sounds delicious - and very good company too
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