I have answered you by PM, but I see you did not read it.
The bass is still available, and I checked what you say about the fretboard and you are right, I didn't notice before. This explains the absence of signs of refret on the fretboard being the frets so new.
So, the fretboard was sanded and had new frets. The good news is that now you can adjust a very low action if desired, I leveled the frets and is very good now. I attached two pics that shows the thickness of the binding, as you asked.