Yamaha U1M Upright Piano March 26, 2018 admin Upright Pianos, Yamaha Yamaha U1M Serial Number: 3549131 Finish: Ebony Polish Warranty: 5 Years Other pianos you might like...Yamaha U3 Yamaha U3 #3952683 Mason & Hamlin BB Grand Piano Mason & Hamlin BB Serial Number: 92532 Finish: Exclusive Monticello Art Case Walnut Satin Size: 7' Warranty: 5 Years ❮ ❯