Yamaha U1 Upright Piano September 14, 2016 admin 48" Height Uprights, Brands, Upright Pianos, Yamaha Yamaha U1 Serial Number: 2230434 Finish: Ebony Polish Size: 48″ Warranty: 5 Years Other pianos you might like...Yamaha U1 Upright Piano Yamaha U1 Upright Piano Serial Number: 2401770 Finish: Ebony Polish Size: 48" Yamaha U3 Upright Piano Yamaha U3 Serial Number: 2676994 Finish: Ebony Polish Size: 52" Warranty: 5 Years ❮ ❯