This is a Diva by Marleaux. It has 26 “frets”. Or, rather, it would be more appropriate to say it doesn’t have 26 frets, since it is fretless. You get the idea. But any fretless will work. My first fretless was an Alembic where I removed the frets. That is a nice way to get used to a fretless model as well: remove the frets from a fretted bass you are used to and fill with a color sawdust (I’d have that done professionally!) that gives you barely visible lines.