Stilwell Pianos Qty. 1 2 3 4 5 6 7 8 9 10 Add to Cart Yamaha U3 Upright Piano - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available. Size-52" Year Built-1971 Yamaha's Renowned U Series. Practice Mute Pedal. Solid Spruce Soundboard. Wet Sand Casted Plate. Made in Japan.