Item Number: #5A190 This is a part removed from an Aria Pro II Les Paul Standard copy model, LS series (model name unknown), manufactured around the mid-1970s. Considering the business aspect, the parts should have been standardized as much as possible, so it is believed that this part was also installed and used in other models manufactured around the same time. The item has been cleaned and polished with polishing agents before listing, but the dirt has not been completely removed. There are no screws that are stuck and cannot be turned, but as this is an old used item, some screws may be difficult to turn. Please be careful when turning the screws during adjustment, etc.