This is a Nikkan alto horn, the predecessor to Yamaha. Total length: approximately 510mm, bell size: approximately 180mm. The Nikkan mouthpiece is also included. The pistons move smoothly, I believe. There are some dents, please refer to the photos. I polished some parts, and they shined. Further overhaul and polishing would be recommended. There is an engraving of No.2A 6701127, so I believe it was made in 1967. The case is not included. I am an amateur, so I cannot provide any guarantees. Please understand this before purchasing. Nikkan Nikkan Yamaha YAMAHA Wind instrument Concert band