Adjusted Yamaha Oboe YOB-421 Semi-Automatic Yamaha oboe The logo has faded, but it disappeared because I wipe the entire instrument with a cloth every time I use it. Please understand. As the photos show, the letters are faintly visible. Thank you for viewing! This is a Yamaha YOB-421 semi-automatic oboe. My mother purchased and used it about 18 years ago at a musical instrument fair in Fukuoka. Five years ago, she gave it to me when I said I wanted it, but I started playing in a wind orchestra with a different instrument, so I had it repaired last year and have been storing it. It was repaired at Tojido Gakki in Shimonoseki City, Yamaguchi Prefecture. The price was about 80,000 yen. I haven't used it since then. The tone is different from the current YOB-431, and some people prefer to use the previous model (YOB-421). The playing feel is light, and I feel the tone is bright, clear, and crisp.