How can I decode the serial number on my KitchenAid Stand Mixer to find out when it was made?

The serial number begins with a manufacturing division code (e.g., W = Greenville, OH), followed by a single character year code, a two-digit week code (01–52), and a sequential serial number. For example, the year code 'S' corresponds to 2005, and the two-digit week number indicates the week of that year the unit was produced. (Appendix F)