Hi. Recently purchased and refurbished a King Saxello. Having a ball with it. By far my most classical sounding horn. Totally different from the SML straight soprano. One question, on the bottom, near the bell, there is a holder that looks like a lyre holder. I see a place for a screw, but don't have the screw. Can't be a lyre holder at this position (inside bottom, below the right thumb holder.) Part of the stand that used to come with the horns? Check out attached pic... Thanks.