This one looks orange on my moniter ast least.
I think that "German" sounds right.
An orange slag in any condition is a rare thing to find.
Nice marble!!
Lets call in @Fire1981 and @Chad G. for a final evaluation here.
It does look like an Alley and I can see some lines along the blue that may be AV.
I wonder?
Marble--On!!
Hmm, it sure looks like a Corkscrew.
The white in your images shows as light blue to me.
I have seen these before and the damage lines up with an Akro.
Marble--On!!
The Jabo Classics came in a variety of ugly and pretty.
I think that you have a pretty here.
@Nantucketdink will have the final say here as far as I am concerned.
Marble--On!!