Not sure what the seller means by reproduction. Lots of photos in listing. I'm far from being an expert, but it sure looks authentic to me from what's in the pictures. If it's the real thing it seems like it's a good deal at $2500.

here's link to listing http://southcoast.craigslist.org/msg/4553484068.html

I remember posting a link to this Bass many, many months ago when I saw it on Craigslist as well .

The only thing I see as a maybe yellow flag is that it looks like for a newer Bass it only has 1 trust rod.  
If it's a fake she's a beautiful fake. Sort of like a man made diamond, hard to tell the difference.  
  Also if it has authentic Alembic electronics this would be a pretty good deal.
 
Pete

Hmmm, second yellow flag, cash only
Rrrrright

I too remember this being up for sale on at least one previous occasion. My own request for information from the seller went unanswered despite several attempts.  I  seem to remember others trying to contact the seller too.

Interesting that the description says Signature electronics, when the pictures tend to indicate Series electronics.
 
Hard to tell the number of truss rods; looking at the different camera angles, I'm inclined to think there are two, despite the fact that I can't see more than one at a time.  Interesting that there is no truss rod cover, nor inserts for screws.
 
Also interesting is that the gold plated XLR is a custom request on a reproduction.  The connector does appear to be a five pin.
 
A look inside the cavity would tell a lot.
 
My guess is that the seller is not the original owner.
 
Here's ; and here's Hammer's earlier thread.

I still think it's a reproduction, I would not spend that money, even if it plays decent.

If it is really a NON alembic but  a real forgery I would not want to even be in the same room with it or in possession of it considering it bares the Alembic logo and trademark . What say a lawyer ?  
 
http://www.criminaldefenselawyer.com/penalty-for-forgery.cfm

Looks like 1 trust rod to me.  
I've seen Alembic look a likes but they never said they were Alembics ex: Ferdinand. Brands always need to be protected for the company as well as the Artists.  

Shots of the electronics would be nice. It would also be helpful to get photos of the pickup cavities. Depending upon what's there it might help confirm if it is real or not.  
 
Another thing to determine is there a serial number?  
 
Lastly could this have been a shop night project therefore the reproduction designation? It wouldn't be the first time one popped up with a logo.  
 
Keith

Why is the Pickup Selector on the upper horn?

Say this is a copy/reproduction/fake and it was purchased and played out in the public. Could Alembic slap a suit on the new owner? Looks beautiful, but a worrisome venture and not worth the savings of what the real thing is ALL about anyway.

No, Craig you can't get in trouble lol. You only get in trouble with copies or reproductions if you own/ make a fake and try to sell/ say it's an Alembic.

The Lloydster steps up to the plate once again....