Where are you located? If you can find a local shop, you are much better off. Saxes don't usually "like" to be shipped. Often, a horn needs adjustment AFTER being shipped.
Also, an "inexpensive" overhaul (repad, new corks, felts, and maybe springs, and mechanism adjustment) can cost you over $200 USD. Wondering if spending the money for a repair will give you the financial return you are hoping for.
Couple FYI's -- Most sax players would rather buy a horn "as is" and take it to their own technician to have it done up their way. Different players prefer different kinds of pads, resonators, etc. If you have the horn done with cheap pads and resonators to keep your costs down, that may be a turnoff to a buyer who might prefer some other kind of pad and resonator. So you sell it for less "as is" and the buyer gets to have it restored to THEIR satisfaction.
Other FYI is, well.... Pre-1930 saxes are not in wide use these days. Intonation and mechanism on most horns vastly improved after 1930 or so.
Having said all that, I would suggest you contact "Sarge" at
www.worldwidesax.com. Sarge is very much into vintage saxes and knows the market for them better than anyone. Also he restores them to their original beauty, and who knows, he might even make an offer for it. Worth a shot. Go to his site and get his contact info.