At our workshop, well-known for customizing trumpets, we have rebuilt a YAMAHA college model trumpet, the YTR-2321, to function seamlessly within modern band ensembles. The YTR-2321, while standard for its time, had some specifications that were insufficient for contemporary brass bands and big bands. We've upgraded it with essential features to make it a modern trumpet, allowing it to be used without hesitation in today's band ensembles. The YTR-2321, though designed in the style of a Schilke model, also prioritized affordability for students, leading to some compromises in functionality. To achieve the original sound of a Schilke-type trumpet, we rebuilt the tuning slide to a reverse design. We've ensured the manufacturing precision is compatible with the tuning slides of the professional model YTR-6320. We've also added a thumb hook to the 1st slide for precise pitch adjustment. Unfortunately, Yamaha currently only offers the Schilke-type YTR-8310Z, making our customized trumpets a valuable option. This is not a resale item that has only been cleaned and oiled. Moreover, it's offered at a super bargain price through direct online sales. ★Customization Details ◉ Rebuilt the tuning slide to a reverse design, achieving a Schilke style. We've paid close attention to the processing accuracy, ensuring compatibility with the tuning slides of higher-end professional models. ◉ Rebuilt the 1st slide to a reverse design and equipped it with a thumb hook. This is an essential feature for modern ensembles. Extending the 1st and 3rd slides allows you to produce a pedal "F." ◉ Replaced the movable ring on the 3rd slide with a directly attached ring. ★Condition The lacquer shows signs of wear, but this does not affect the instrument's functionality. Good sound doesn't necessarily come from a visually perfect instrument. The wear and tear has a certain appeal. No noticeable dents, and the slides and piston valves have been adjusted. All parts are present and function smoothly. ★Includes: Instrument, Single Case Optional Customizations: Ring-type thumb hook, ring-type finger hook replacement