Please understand that while we may temporarily lower prices, we generally do not respond to price negotiations. Management Number: #5A290 This is a part removed from a Yamaha SA-50 manufactured in the 1970s. From a management perspective, parts were likely 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. We have cleaned and polished the item with polishing agents before listing it, but it is not completely free of dirt. For free shipping, we may change the shipping method at our discretion.