This listing is for a Bach Stradivarius 50BO, which has undergone a complete overhaul at a workshop, including bell cutting, unlacquering, and dent removal. It will be shipped in a used Marcus Bonna case, which cost around 100,000 yen. The overhaul alone cost approximately 250,000 yen. For reference, the current retail price of a new model of this instrument is around 800,000 to 900,000 yen. The instrument's original quality has been enhanced, resulting in a richer sound and improved playability. The slide and lever action are smooth and in good working order. While most dents have been removed, some minor dents remain that do not affect playability. I am selling this instrument to raise funds, although I am hesitant and may remove the listing. Please consider purchasing it soon. Thank you.