Yamaha U1 Upright Piano November 8, 2016 admin 48" Height Uprights, Brands, Upright Pianos, Yamaha Yamaha U1 Serial Number: 2331481 Finish: Ebony Polish Size: 48″ Warranty: 5 Years Other pianos you might like...Yamaha U1 Upright Piano Yamaha U1 Serial Number: 3507258 Finish: Ebony Polish Size: 48" Warranty: 5 Years Yamaha C5 Grand Piano Yamaha C5 Serial Number: 5504066 Finish: Ebony Polish Size: 6'7" Warranty: 5 Years ❮ ❯