This is a cornet made by C.G. Conn, a major American musical instrument manufacturer. The "New Wonder" series was introduced as the company's flagship model and was used by many players, both professional and amateur, mainly for saxophones and cornets. During this period, Conn was known as the world's largest wind instrument manufacturer, and while continuing to innovate in design and manufacturing technology, it also greatly contributed to the development of jazz and classical music. This is a cornet that was also used by the legendary cornet virtuoso Bix Beiderbecke, and it is an instrument with a new system that was very popular at the time. It has a quick-change system that is very easy to use in orchestras, and as shown in the photo, it can also be used as an A cornet by extending the tuning slide. Most of these instruments no longer have this system working and require manual extension of the branch tube, but this instrument miraculously still works. This is shown in the fifth photo. Fine tuning is also possible with the opera glass micro-tuner mechanism. It has a luxurious construction, including beautiful engraving and a gold-plated bell interior. Air tightness is excellent. It is in a condition that can be called a miracle for an instrument of this age. The surface plating remains 99%. There are some repair histories. There are solder joints on the receiver and small dents on the main tuning slide, but there are no problems with use. Please check the photos carefully as much as possible. Modern mouthpieces such as Denis Wick and Bach can be used. Please note that it is not a trumpet shank. Although it is over 100 years old, the intonation balance and tone are excellent, and it is an instrument that has a warmth different from modern instruments. It is a museum-quality masterpiece. Please purchase it at your own discretion as it is an old item. I will respond to additions of photos etc. as much as possible to avoid trouble. Please feel free to ask any questions. No case. No mouthpiece.