The number of digits in a Kawai piano serial number depends on the year and country of manufacture, with later models typically having six or seven digits. Kawai pianos manufactured in the United States have a serial number beginning with the letter "A," while those manufactured in Indonesia begin with the letter "F" and those manufactured in Japan begin with a number. Models sold in Canada exclusively will start with the letters "KX."
Lists of Kawai piano serial numbers will generally list the starting number for each year. For example, the starting serial number for pianos manufactured in the U.S. in 1996 is A64000. Customers should disregard pianos with serial numbers that do not start with "A," "F" or "KX."