Yamaha UX50B1 Upright Piano March 22, 2018 admin Upright Pianos, Yamaha Yamaha UX50B1 Upright Piano Serial Number: 4696573 Finish: Ebony Polish Other pianos you might like...Yamaha U3 Upright Piano Yamaha U3 Serial Number: 3706197 Finish: Ebony Polish Size: 52" Warranty: 5 Years Yamaha U1 Yamaha U1 #2696936 ❮ ❯