YAMAHA Cornet YCR-2310 [Contents] YAMAHA Cornet YCR-2310 Body Mouthpiece x 1 YAMAHA 11C4 Hard case included [Condition] Personally, it doesn't seem to be stuck. Pistons moved. There are scratches, rust, and dirt. There may be dents. Please check the photos. Please understand that I cannot capture everything due to reflections. I have checked the sound production in a simple way as an amateur, but I am not a professional, so please purchase it on the assumption of junk, repair, or maintenance. If you are concerned, please take it to a musical instrument store and have it adjusted.