Lost silver soprano saxophone with engraved initials on mouthpiece near Sioux Falls park.

I lost my soprano saxophone while walking through Sioux Falls park last Saturday afternoon. It's silver with a few scratches on the body, and the mouthpiece has my initials engraved on it. I had set it down briefly to take a picture, and when I returned, it was gone. I'm really hoping someone might have seen it or picked it up. It holds a lot of sentimental value for me.