How do you know which baritone instrument you have?

To identify your baritone instrument, first check its physical characteristics, such as size and shape, which can vary between baritone saxophones, baritone horns, and baritone ukuleles. Next, look for identifying features like the type of mouthpiece or bell design. Additionally, consult the manufacturer’s label or markings on the instrument, as they often indicate the specific model. If you're still unsure, you can seek advice from a music teacher or a professional musician.