Re: Information required
If your intent is to play the instrument then I would definitely say, "NO, its not worth restoring". If your intent is to preserve a family heiloom or it has sentimental value, then by all means, its worth whatever you deem its worth. But in terms of resale, restoring it is a loosing proposition.
These old turn of the century Carl Fischer imports from Buffet are not very good saxophones. They were even out dated in their day. Mechanistically, they are terrible and they play horrribly out of tune. To be perfectly honest, an original 1800's Adolphe Sax is a much better instrument even with the double octave mechanism.
Sorry for the not so great report, but hopefully, this information will save you money if you were thinking of restoring it for resale.
Best of Luck!!