Thank you for viewing. This is a used item. The pistons and slides are not stuck, and all parts function well. The instrument has been cleaned internally, and basic operation has been confirmed, along with a simple play test, so you can start playing it right away. ■ About the YTR-136 (ChatGPT) This is an entry-level model manufactured in Japan from the late 1970s to the early 1980s. Designed for beginners, it is "easy to blow and produce sound," and was often used in educational settings. According to multiple reviews and store comments, it is sometimes praised as having "good sound quality" and being a "hidden masterpiece" among Yamaha's entry-level instruments. ■ Condition No missing parts, and all parts function well. There are no dents or bell bends. There are signs of use such as minor scratches and dullness. Please make your judgment based on the photos. ■ Maintenance Details ・Internal cleaning with citric acid solution → Internal cleaning with baking soda solution ・Simple internal brush cleaning with neutral detergent ・Disassembly of moving parts, cleaning with neutral detergent ・Piston valve operation check ・Piston oil application ・Slide operation check ・Slide grease application ・Water key cork replacement ・Sound production and scale play test confirmation ※However, please note that the above are not at a professional level, so if you require strictness, please refrain from purchasing or consider it with the assumption of maintenance. ■ Accessories ・Mouthpiece (7C) New and unused, brand unknown 【Notes】 Due to the nature of used items, we may not be able to fully grasp the degree of aging, repair history, or whether the parts are original. Please check the images and only purchase if you are satisfied with the condition of the item. #YAMAHA #Yamaha #YTR136 #YTR-136 #ytr136 #ytr-136 #Beginner #BrassBand