Stilwell Pianos Qty. 1 2 3 4 5 6 7 8 9 10 Add to Cart Knabe Grand Piano - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available. Year Built-1921 Size- 6'4" Golden Age Instrument. Rebuilt Piano. Solid Spruce Soundboard. Wet Sand Casted Plate. Made in USA.