The model is a 3100 FA-5S B♭ tuba. It's a Swiss-made Wilson (also famous for euphoniums) tuba, purchased new about 8 years ago, and it was a star in an orchestra. I'm selling it because I unfortunately have to let it go. There are a few minor dents on the bell and body, but they don't affect the appearance or playing at all. This is a B♭ large tuba with the characteristic sound and rich tones of silver plating, making it attractive for both high and low notes. It has 4 front pistons + 1 rotary valve, slides (all working well!), a 6/4 body size, and a 500mm bell diameter. It comes with a soft case, but the belt connection is damaged and has been reinforced. Please consider it as a bonus. A YAMAHA 67c4 mouthpiece is included. Come on! Please buy it and enjoy the orchestra feeling to your heart's content. Thank you. The weight is 15kg, which is a typical weight.