I am selling items that I have kept at home. To prevent corrosion from oil before storage, all oil has been removed, so there is no sticking of moving parts. Since these are used items, there are some peeling of plating, scratches, and other imperfections. I will include piston oil, but I have not applied it as preferences vary. Similarly, slide oil and tuning slide grease are necessary, so please use your preferred products. I have lightly tested the sound. Items for sale: Yamaha YTR 2320ES Mouthpiece Yamaha 11C4 The mouthpiece plating is thin, so please consider it as a bonus. Piston oil Denis Wick Yamaha hard case Shipping will be done by wrapping the hard case in bubble wrap. Please also check my profile. Thank you.