Yamaha U1 Upright Piano May 2, 2018 admin Upright Pianos, Yamaha Yamaha U1 Upright Piano Serial Number: 5853603 Finish: Ebony Polish Other pianos you might like...Steinway Model O Grand Piano Steinway Model O Yamaha U30A Upright Piano Yamaha U30A Serial Number: 4998748 Finish: Ebony Polish Size: 52" Warranty: 5 Years ❮ ❯