That fret board has a book matched mate I am saving for a special upcoming bass. I have 3 others that are equally stunning. all are wide enough for a 6er.
That last shot shows the board with a splash of Naptha solvent. I use it to reveal figure and simulate finishes. It is great for finding sanding scratches and also for cleaning metals and starting fires. fairly handy all the way around

The fretboard, however, won't be finished. Ziricote will take a nice polish.
Final specs for this bass have evolved since starting but here's what is going on.
Walnut and Cedar body core with Padouk tone block
5A Maple top and back
5 pc. neck of Flame maple,Walnut and Cedar
Ziricote board
Hipshot A .708 bridge
hipshot ultralights 3/2
Bartolini 72P25C pair
Aguilar obp 3
Should move right along in the next few weeks I hope. This will be my first hand at a Nitro finish so that may take some time. How hard can it be? not much more than Poly I'm guessing.
Nitro tips and tricks are warmly welcomed.