Some have come across the this picture:

...and assumed that the above picture is THE bass that was used or one of the same make and model. Close but no..

Looks like it is indeed a Fender Jazz bass. Adam probably had it made by the Fender Custom shop or had an older model refinished by them.
Here is the answer I got back from Lakland:
"Unfortunately those are Fenders. We made him a similar color bass but don't know if he is using it.
His last order was provided without finish so he could match the paint of his Fender. I don't know if it ever got put together."