Yamaha U1M Upright Piano March 5, 2018 admin Upright Pianos, Yamaha Yamaha U1M Upright Piano Serial Number: 3411575 Finish: Ebony Polish Other pianos you might like...Yamaha C3 Grand Piano Yamaha C3 Grand Piano Serial Number: 4990881 Finish: Ebony Polish Size: 6'1" Yamaha U1 Upright Piano Yamaha U1 Upright Piano Serial Number: 4176441 Finish: Ebony Polish Size: 48" ❮ ❯