I'm torn on this one a bit too. It's a weird dial for sure, without much to reference against other watches Heuer ever produced. And yet it looks very convincing in the metal, without the usual tell-tales of a redial or a fake and TH put one in a display without batting an eyelid, albeit a display that was hastily assembled by all accounts. So I lean towards genuine but it would definitely still be reassuring to see it in a brochure somewhere.

That and the Shauntavias too:

Bit jealous of the Autavia lovers for having two such mysteries!