Please understand that while we may temporarily lower prices, we generally do not negotiate discounts. Management Number: #5A320 This is a part removed from a Yamaha SL-430 manufactured in the 1970s. From a management perspective, parts were likely standardized as much as possible, so it is believed to be a common part with other models. Based on my review of catalogs, it appears to be compatible with the following models manufactured around the same time. (In addition, it may have also been included/used in other models manufactured around the same time.) SL380/SL400S/SL430/SL450S/SL500/SL500S/SL550/SL550S/SL600S/SL700S/SL800S The item has been cleaned and polished with polishing agents before listing, but it is not completely free of dirt. For free shipping, the shipping method may be changed to a different method at our discretion.