Thanks, AllGood. I have registered on Alembic and found the relevant information.
Here is the back, pictured in RV's sale listing (the grain pattern is equally amazique):

Again, wow.  I missed that posting.  Congrats again, she's a beaut.

Welcome cello Connecticut-ite. Beautiful instrument!

There is an Essence on EBay with kind of similar grain.  I wish it had come up before I bought my maple top Essence.  It may be for sale by someone here.  I emailed about an offer, but having made two large purchases recently, I can't come up with enough.  I really appreciate pretty and unusual wood.  A local artisan made my wide a georgeous coffee table last year out of Eucalyptus.  That's kind of... I think, a wood that has not been used very much in the US.  Such pretty grain and variety of colors.  I wonder if Alembic has ever made a bass out of Eucalyptus.  Time to search the archives.