Yamaha C5 Grand Piano October 25, 2018 admin 6' - 7' Length, Grand Pianos, Yamaha Yamaha C5 Grand Piano Serial Number: 4520812 Finish: Ebony Polish Size: 6’7″ Warranty: 5 Years Other pianos you might like...Yamaha C7 Grand Piano Yamaha C7 Serial Number: 5870323 Finish: Ebony Polish Size: 7’6″ Warranty: 5 Years Yamaha C7 Grand Piano Yamaha C7 Serial Number: 5436472 Finish: Ebony Polish Size: 7'6" Warranty: 5 Years ❮ ❯