This bass is 'double' registered in the
Registry: once a 'B033478' with no specific description nor owner, but also as 'CLF033478'. In the latter the description reads:
'Kahler bass tremolo added by a luthier in Hawaii.' and there is also a (previous) owner listed. If that owner is not you, and the email is still active and working, you might stop him/her a mail and ask for more info.
The choice of maple fingerboard has been available for the longest time as has black as a finish, so nothing out of the ordinary there.
$715 sounds like a good price to me too. But mor important would be whether it is worth that amount to you. Whatever anybody else says then is rather inconsequential.
Hope this helps,
- Jos