Management Number: #5A211 This is a part removed from a Yamaha SR-400 manufactured in the 1970s. Considering the business aspect, parts were likely standardized as much as possible. Therefore, it's believed to be a common part with other models. Based on my review of catalogs, it appears to be shared with the following models manufactured around the same time (and there's a possibility it was also used in other models manufactured around the same period): SR400/SR500/SR700 Furthermore, it may also be a common part with the following models sold after those manufactured around 1979: SR400S/SR450S/SR500S/SR550S The part has been cleaned and polished with polishing agents before listing, but it's not completely free of dirt. There are no screws that are stuck and cannot be turned, but as it is an old used part, some screws may be difficult to turn. Please be careful when turning screws during adjustment, etc.