Jeff, I'm aware of that tree and, as Wills says in his auction, that tree is a mystery at this point and does not have pink petioles.

I do not think that is an UCD Ischia Black.  Perhaps it's that old discovery of satellitehead?

The leaf pattern is pretty weird looking.

1) Ischia Black is very relunctant to have thumbed seven finger patterns.  Main is three fingers.  Fast growth is five fingers.
2) When in five finger form, the leaves resemble Violette de Sollies.  Outer leaves stick straight out, evenly oval.
3)  IB leaves are rough and dull, and not inclined to be glossy
4)  IB strongly tends to have tinted pink stems on the leaves.  Even if this was shaded, you'd reasonbly expect less decisively green stems.

The auction IB

Okay, that is my thought about that one as well.  I don't know the entire story about this except that somebody in Europe supposedly tissue cultured IB and somebody other than Wills imported it here.  I don't know what the source of the material used by the TC was and wonder if they started out with the wrong thing.  At the same time, I'm reluctant to say anything for sure about this since trees are young and the impact of FMV removal is something I am certainly no expert on.

Here is my BI. It is from a private collection in Europe. Fuzzy feeling leaf hopefully it will set fruit this year. No FMV even though all my other trees have it.

Looks kosher and quite healthy!