This is a Yanagisawa WO-20 alto saxophone. Below is the description. Reference price for a new WO-20: 649,000 yen. The WO-20 is made not of regular brass, but of bronze brass, which contains copper. While it would normally have a gold lacquer finish, this particular instrument has a brushed satin gold plating (GP) on the U-tube and bell, and the inside of the tubing is also GP plated, with the inside having a standard GP plating without satin finish. Furthermore, the connection between the U-tube and the main body is soldered, making its response speed and sound projection incomparable to a standard WO-20. I actually compared it with a display model WO-20, and it was on another level. I'm not exaggerating when I say it's so easy to play and responsive that it makes you laugh. The tone is also warm and resonant due to the bronze and GP plating. It suits classical, pop, and jazz, but might not be ideal for bright, flashy genres like fusion. If the entire instrument were GP plated, the bronze + GP combination would make it extremely heavy, requiring a very skilled player, and it would be geared entirely towards classical music. However, by keeping the first tube with a standard finish and soldering the U-tube, it has been finished to achieve excellent versatility and projection. Initially, the GP neck was sold separately, but I will include both. They are the upper type. The body is clean, but the neck shows some signs of use. Personally, I strongly recommend playing with the GP neck. As mentioned in the title, I have installed "Shiba screws." I couldn't find the regular screws. I will include them if I find them before sale, but currently, the normal screws are not included. There are no drops or scratches that affect the instrument's performance, but there are signs of normal use. The neck also has scuffs, though no dings. Please understand this point. It underwent a complete overhaul when purchased new, at which time the GP plating and soldering were done. I don't know how much it would cost now with current gold prices, but it would likely be over 500,000 yen. It was recently fully adjusted by a renowned workshop and is in perfect condition. I don't expect any maintenance costs for a while. I bought it for a family member, but due to circumstances, they can no longer play it, and since I primarily play tenor, I've decided to sell it. I am open to questions. Thank you. The case is a Protec flight case. It has ample storage and is a good case.