Re: Silver CC Conn
A 1924 C-Melody saxophone (Low-Pitch). Depending on your version of what "5 condition" is, I'd say that if it plays from low Bb to high F smoothly that it might be worth from $200-$300. C-Melody saxophones aren't generally sought after like Bb tenors or Eb altos, and they are relatively common so their value just isn't very high. A similar condition alto or tenor would be worth about 50% more. The Low pitch designation means that it is designed to A=440Hz as opposed to high pitched instruments which tune to, I believe, A=452 Hz. Modern instruments, unless odd or exotic, are all A=440.
The wear at the fingertips suggests that it used to be (or may still be) a great playing saxophone.