A few years ago, I bought an Alto Saxophone from a schools band auction. It is a very nice looking instrument and it has a decorative engraving on the back side of it. On the front side of the bell, it says 'U.S.A. Crestmont Woodwinds" and the Serial Number is AS-02L10001. I've been looking for weeks and I haven't been able to find ANYTHING on this instrument. Any help would be appreciated. I'm planning on taking it to get looked at but last time I did, nobody knew anything. It wasn't a cheap saxophone when I bought it, and I need to find out more about it because I want to sell it. I need to know what price I should set. Please help!