I couldnt bought Ebony fingerboard for my fretless bass so here I'm looking something like ebony. It doesnt have to be same but as close as possible 
I dont like rosewood fingerboard on fretless I want a clear sound. Rosewood has a round tone.
Actually I dont have much choice in here. I have access to maple, cocobolo, purpleheart and rosewood. I have to choose between these.
The bass will have a body with flame maple center block, alder wings ( hollowed), 5 piece neck ( Ash mostly) and Delano Quad Coil at bridge with Sonar 3ms preamp.
I dont like rosewood fingerboard on fretless I want a clear sound. Rosewood has a round tone.
Actually I dont have much choice in here. I have access to maple, cocobolo, purpleheart and rosewood. I have to choose between these.
The bass will have a body with flame maple center block, alder wings ( hollowed), 5 piece neck ( Ash mostly) and Delano Quad Coil at bridge with Sonar 3ms preamp.