Yamaha U1 Upright Piano June 7, 2017 admin 48" Height Uprights, Brands, Upright Pianos, Yamaha Yamaha U1 Serial Number: 3492559 Finish: Ebony Polish Size: 48″ Warranty: 5 Years Other pianos you might like...Yamaha U1 Upright Piano Yamaha U1 Serial Number: 2442054 Finish: Ebony Polish Size: 48" Warranty: 5 Years Yamaha U1 Upright Piano Yamaha U1 Serial Number: 1932635 Finish: Ebony Polish Size: 48" Warranty: 5 Years ❮ ❯