Please understand that while we may temporarily lower prices, we generally do not negotiate discounts. Management Number: #5A317 This is a removed part from a Yamaha SG-500 manufactured around 1976-1979. Considering the business aspect, parts should have been standardized as much as possible, so it is believed to be a common part with other models. Based on our review of catalogs, it appears to be compatible with the following models manufactured around the same time (and may also have been used in other models manufactured around the same time): SA700/SA1000/SA1200S/SA900/SA1300/SA1800 SF500/SF700/SF5000 SG500/SG600/SG700/SG800/SG800S SX800A/SX800B This is a single item (one piece) as shown in the photos. We have cleaned and polished the item with polishing agents before listing, but it may not be completely free of dirt. For free shipping, we may change the shipping method at our discretion.