From the seller's description of this, and his other items, he appears to be a musician and is pretty knowledgeable about what he's got. If he's dodging the question I'd treat it as a red flag. (Or, maybe he's out on a gig and hasn't had a chance to respond to you yet. Time will tell, I suppose.) In any case, I wouldn't fret too much over it. IMHO, a Conn of this vintage is no great prize (unless for some reason you're trying to complete a set of pre-rolled tone hole Conns), the opening bid is already no major steal, and it doesn't appear to be in exceptional condition. I'd pass and wait for something better to come along. Even if you have to pay a little more, a 1920s Conn would be a considerably better player. I have a tenor of about this vintage and it plays like a student horn. The only reason I bought it was it's in near mint original condition and the price was $75 (in a local antique shop). My 1923 Conn tenor, a twice (at least) relacquered, surplussed, high school horn that's been beat nearly to death still outplays it by a mile and a half.