Just looking for a rough idea on how much my alto sax is worth. It's a Conn alto sax. I've included the links to photos of it, including one with the model number. One shop told us about $750 - I wanted to get a 2nd opinion online - even a rough guestimate is fine.
Depending on which factory the Conn sax was made in could make a difference of several hundred dollars. The serial number will give a year of manufacture, and that's a good place to start.