This is a Tombo Major Boy harmonica. The key is A. There are stickers on the side. I believe the last time I used it was over 10 years ago. I am selling it because I don't use it anymore. I have only lightly cleaned it with wet wipes, alcohol, and cotton swabs. I haven't checked the operation, but I used it without any particular problems, so I think it can be used normally. #Tombo #BluesHarp #TOMBO #TsuyoshiNagabuchi #Yuzu #MAJORBOY #MajorBoy