Thank you for viewing! This is a pocket trumpet by Kaerntner. I purchased it about 10 years ago, and I've only touched it a little, just trying it out. I have disinfected it to a novice level, but I haven't disassembled and cleaned it. (I haven't used it enough to warrant disassembly and cleaning.) I apologize, but I don't have much knowledge of musical instruments, so I can't answer specialized questions. In my novice opinion, it's a beautiful product. - Type: Valve trumpet - Material: Brass - Accessories: Case, mouthpiece - Color: Gold - Number of valves: 3