Just saw this on Facebook. The poster was trying to figure out with Audix microphone this is (probably D series?)

I've looked up every Audix mic I could find (especially the D and F series), and none of them look like this one. Any ideas? If it helps, the poster is from Australia.

Yeah, uh-huh...that's what they all say.
Not a D6, completely different grille and too narrow.

Tbh, I can't find any mic that matches that... looks like a combination of mics, but perhaps it's a legacy product that there's not enough about online to be high up in Google search results? Closest I can find to that is the Audix F12 (Link) which is seemingly now discontinued according to the Audix site, though it isn't the same as the mic in your picture.
Hey, look. Sigs are back.