Pearl, a well-known manufacturer of percussion instruments and flutes. This model is the NST-97, with a sterling silver head joint and body. Regarding the head joint, we have confirmed it is made of silver by a tap test. However, as there isn't much information about the body, it's best to consider it as possibly being silver. The joint between the head joint and the main body is slightly loose, so adjustment may be necessary for peace of mind. The head joint cork should be replaced, but its position has been temporarily adjusted. The pads show visible damage, but it is possible to produce sound down to Low C. It is in playable condition, but replacing the pads would likely improve playability. The movement of each key is smooth. Key oil has been applied. Overall, there is some slight plating lift, and the keys, which are likely made of nickel silver with silver plating, show some damage, but it doesn't appear to be critical. The case shows damage, and it might be better to prepare a new one for storage and transportation. It could be a good addition to a collection, or it could be used after proper adjustment! Please consider it. m(__)m