eBay seller japanproduct, who still has my bass listed for almost twice what I paid, replied to my question - "My listing is authentic listing.Another items is copied from me by another seller."He and 3 other sellers still have the bass listed. I reported it and got this answer from Customer Service:"Ilan, I wonder, is there only one 1972 Yamaha SB-50 serial #10009? If yes, and if you think the item is not authentic, you can report the listing so that we can further investigate on this."
I've never even seen one of these before. Very cool looking bass.Play it in good health and enjoy !