Re: Conn Chu Berry C-Melody
My understanding is, if it's got the "fingernail file" g# key, then it's a Chu... Of course you can tell if it's a C by the serial, and letter. I would think all Chu Berry's would have been "professional"... don't think any "lesser" models were made. I think the serial # would also pinpoint whether it's a Chu or not.
As to value.... that's kind of vague... I think if he posted it on ebay he could get more. You could get it overhauled for around $850. Dean Sanford in Milwaukee does a great job - google his name and his website will come up.