Yamaha U1 Upright Piano June 17, 2016 admin 48" Height Uprights, Brands, Upright Pianos, Yamaha Yamaha U1 Serial Number: 3678697 Finish: Ebony Polish Size: 48″ Warranty: 5 Years Other pianos you might like...Yamaha U1 Upright Piano Yamaha U1 Serial Number: 1864271 Finish: Ebony Polish Size: 48" Warranty: 5 Years Kawai KU10 Upright Piano Kawai KU10 Upright Piano Serial Number:2364884 Finish: Ebony Polish Size: 48" Warranty: 5 Years ❮ ❯