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...Petrof Model III Mahogany Polish Grand Piano Petrof Model III - Mahogany Polish Serial Number: 565028 Finish: Mahogany Polish Size: 6'4" Warranty: 3 Years Yamaha U3 Upright Piano Yamaha U3 Serial Number: 2518848 Finish: Ebony Polish Size: 52" Warranty: 5 Years ❮ ❯