I am offering a YAS-61 alto saxophone, the top-of-the-line model from Yamaha that laid the foundation for the company's current success. Unlike current Yamaha saxophones, which are restricted by JIS standards, the materials used in instruments from this era were chosen more freely. As a result, these Yamaha saxophones are prone to red rust, but they used materials with a higher copper content than current models, resulting in a darker, more pleasing sound. As a side note, during John Coltrane's Japan tour, he liked the Yamaha alto saxophone that was brought to him so much that he played "My Favorite Things" on it, which he usually played on the soprano saxophone. (The album cover also features an alto saxophone.) The YAS-61 was officially released the following year, so it may have been a prototype. Regarding the instrument's condition, I used it until 2-3 years ago, but it needs some maintenance. Please understand this before bidding. Also, due to the recent increase in scams involving product substitution, I must ask that all sales are final and non-refundable. Thank you for looking.