Smo wrote: What makes it a custom shop? Fender japan used to make all kinds of basses in the 90s and early 2000s.\\
I sold one here, it had a logo in the back of the headstock that was built by a special team in Japan and the body was ash.
Now that you've mentioned, this one doesn't have the same logo in the back, makes sense!
I'm not an expert in Fender basses but from all the years I've been seeing these basses, this is the second one I've ever seen factory fretless, cool find for sure!