Re: vintage conn alto sax??
You horn is not a New Wonder Series II i.e. so called "Chu Berry". It is what is often referred to as a "transitional" model made in they early 1930's (1931-1932 in this case), nick named this because it exhibits aspects of the earlier New Wonder II, and the successive "Artist/Naked Lady/Lady Face" model.
Condition and original finish has everything to do with value, but it is likely going to fetch at least $1,300+ with the price increasing with it's overall condition.