Pianos › Yamaha U10 B1 #4654637 - POA Image 1 of 1 Yamaha U10 B1 #4654637 - POA €0.00 Serial number #4654637Price includes delivery to ground floor, 10 years guarantee and an aftersales tuning. Add To Cart Added! Serial number #4654637Price includes delivery to ground floor, 10 years guarantee and an aftersales tuning.