Well yes, IMHO, perhaps you should have done this before. Now it looks, to me at least, just a bit as if you are trying to focus attention on a sale you want to make.
If you really want an appraisal, take it to a luthier.
Barring that, PM MollyKay
http://www.talkbass.com/forum/member.php?u=79175
Or contact them through the web:
http://www.bassmonkey.net/
As far as I can tell, she and her partner are pretty reliable information on this vintage of American basses.