Kawai provides the serial numbers for its pianos on the receipt that the piano came with, the warranty card and on the piano itself. The company puts serial numbers in different places on upright, digital and grand pianos.
On upright pianos, find the serial number stamped on the right side of the frame, in the middle near the seventh octave. On grand pianos, find the serial number on the right, front side of the frame, at the same place as the seventh octave. Kawai stamps the serial number for digital pianos on the plate on the back of the instrument.