For example, the serial number for the first guitar built in the El Cajon (USA) factory on Jis 1107064001. Taylor's current 10-digit serial numbering format that started in November of 2009 identifies where the guitar was built, the start date, and the assigned number of the guitar on that day's production schedule. 10-Digit Serial Numbers (2009 - Present Day) Taylor's serial numbers with 9, 10, or 11 digits are decoded differently. Mary Immaculate Catholic (Farmers Branch, TX)
