There is on You Tube quomamuk a demonstration by the poster of a Burns Artiste with a maple neck. The guy does not seem to know much about the guitar and I am pretty sure the fingerboard has been replaced. However it is worth a look just to see an original finish Artiste with a maple neck. It has the early cream secondary plate but has a tremolo arm fitted. It also has the bulbous switch.
Although it looks like a maple fingerboard replacement it may not be which would make it an oddball and extremely rare
Sorry don't know how to put link onto the site but will try