This is a classic standard model from the 1970s, a result of Yamaha's technical collaboration with Schilke Music Products, a high-end trumpet manufacturer in the United States. Due to its excellent performance, the YTR-236 was also used as a base for customization by established American manufacturers such as Holton and CONN, with Yamaha producing their own brand trumpets as an OEM. The YTR-236 is a wonderful model with a Schilke design, but because it was also intended for students, affordability was an important factor. Therefore, it had some specifications that were insufficient for modern brass bands and big band ensembles. This instrument has been upgraded at our workshop with the essential modifications for a modern trumpet, implementing specifications that allow it to be used without hesitation in contemporary band ensembles (orchestras). Currently, the YTR-8310Z is the only Schilke-type instrument offered by Yamaha, which is a shame. Atelier customization provides a rare opportunity to acquire a Yamaha Schilke-type instrument at a reasonable price. The performance of this instrument differs from those simply cleaned and oiled resale items found on flea market sites and auctions. ★Customization Points ◉ The tuning slide has been rebuilt to a reverse design, achieving a Schilke style. We have also paid close attention to processing accuracy, ensuring compatibility with the tuning slides of professional models, which are higher-end instruments. ◉ The 1st slide has been rebuilt to a reverse design, and a saddle-type thumb hook has been installed. This is an essential feature in modern ensembles (orchestras). Pedal "F" can also be produced by operating the 1st and 3rd slides. ◉ The adjustable finger ring on the 3rd slide has been replaced with a fixed type, eliminating play and unnecessary resonance. ★Condition No noticeable dents, and the slides and piston valves have been adjusted. There are no missing parts, and it functions properly. Approximately 80% of the lacquer remains. Although there are some areas where the lacquer deterioration is noticeable, it does not affect functionality, and a beautiful appearance does not necessarily guarantee a beautiful sound. ★Items for Sale Trumpet body, mouthpiece, single case ★Options (Please indicate in the comments) ・Case and mouthpiece not needed - ¥2,000 off ・Add a brace to the tuning slide + ¥2,000