... however, you've also got that funky octave vent on the neck -- but the key is a separate piece and on the horn.
1. The Saxgourmet list is rather general and at least 5 years old (Goodson no longer maintains that 'site)
2. Remember that "monetary value" does not = how much you're going to get for it, particularly in this economy
3. If you do list it for sale (and you can't do that here until you hit 25 posts), make sure the first thing you mention is that it's LOW PITCH. That's a good thing: it's got the same tuning standard as modern instruments
4. "Series II" was a name I gave to, primarily, altos and tenors Conn made after a specific serial number range because they were
considerably different from the horns that came earlier and it was very easy to spot those differences. If you want to extend it to baritone sax, you'd have to have the octave vent AND key on the neck, as well as the "nailfile" G# key (and several other things, too). All this occurred around s/n 180xxx. So, just call your horn a "New Wonder."
As an amusing aside, there aren't that many surviving Conn baris from about 100xxx to 170xxx. Interesting that it's that specific of a range. Anywho ...
You can look at my
comprehensive guide to horn value-ation and try to determine a good value for your horn that way. The bottom line is that condition is king. It looks like you need all new pads. Mechanical condition otherwise looks pretty good and I can't see any dents in the pictures you posted. I'd be a little concerned about springs, though. Re-springing and repadding a bari isn't just chump change, either.
www.worldwidesax.com would say, "$1600 to $1900 for repairs." Someone here might do it for less ... or more
.
Looking at my 2-year-old data,
sold horns in similar condition average around $750.
Best recommendation I've got:
If you want to sell the horn, put the horn on eBay for a $750 reserve and don't do anything at all to it -- no repairs of any kind. Don't even try to polish it. See how much it sells for. Or put a $1800 reserve on it and then contact the highest bidder after the auction to see how much he'd buy it for, because it won't reach the reserve.
If you want to keep the horn, I'd recommend doing a full overhaul with worldwidesax or another of the luminaries here. You'll get a very good older pro horn, after all is said and done, for a price that's going to be less than what most student baris cost.