PRS Serial Identification Numbers. Year Identification / Serial Numbers Excerpt from The PRS Guitars Book, written by Dave Burrluck Serial Number Year-Code Prefix. 
All guitars and basses have serial numbers which start with a year prefix. The prefix is the last one or two digits of the production year, and it applies to all models below. Read the PRS story; get factory tour details for your next visit, and check out our career opportunities.
10-Digit Serial Numbers Our 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. For example, the serial number for the first guitar built in the El Cajon (USA) factory on July 6, 2014 is. See the explanation below: First digit indicates where it was made. (1 = El Cajon, California, USA; 2 = Tecate, Baja California, Mexico) 1 2nd & 7th digits indicate the two-digit year - '14 (2014) 1 3rd & 4th digits indicate the two-digit month - 07 (July) 1107 064001 5th & 6th digits indicate the day - 06 (the 6th) 1107064 001 Last three numbers indicate the guitar's position in that day's production sequence.
9-Digit Serial Numbers From 1993 until the end of 1999, each Taylor guitar featured a nine-digit serial number that pinpoints when work began on that guitar, along with its series and production position. See the explanation for serial number 980311301 below: 980311301 First two digits indicate the year - 98 (1998) 3rd & 4th digits indicate the two-digit month - 03 (March) 9803 11301 5th & 6th digit indicate the day - 11 (the 11th) 980311 301 7th digit is a series code number - 0 for 300 or 400 Series, 1 for 500 through Presentation Series, 2 for 200 Series, 3 for a Baby, 4 for a Big Baby, 5 for a T5, 7 for Nylon Series, 8 for 100 Series, and 9 for SolidBody Series. This example is number 3, a Baby. 9803113 01 Last two digits indicate the guitar's position in that day's production sequence.
11-Digit Serial Numbers January 2000 - October 2009, the serial number expanded from 9 to 11 digits to accommodate the four-digit year designation. Other than the first four digits noting the year, it's decoded the same as the 9-digit serial numbers. See the explanation for serial number 1 below: 1 First four digits indicate the year - 2007 20 5th & 6th digits indicate the two-digit month - 03 (March) 21 7th & 8th digits indicate the day - 11 (the 11th) 20070311 301 9th digit is a series code number - 0 for 300 or 400 Series, 1 for 500 thru Presentation Series, 2 for 200 Series, 3 for a Baby, 4 for a Big Baby, 5 for T5, 7 for Nylon Series, 8 for 100 Series, and 9 for SolidBody Series.