Vintage king trombone. Recently acquired from an estate sale. We no nothing about items like this. We are selling it “as is”. What you see is what you get. With the little bit of research we did we discovered that the serial number claims it was made between 1. The instrument is in amazing condition. No dents or dings. It slides like butter. The engraving is gorgeous. We have been advised to let someone else polish it. This instrument was owned by a fairly famous world traveling jazz musician that we are not at liberty to disclose. The case is rough but cool. Selling it all as is. No mouth piece. Medium bore low pitch.