Google Ibanez serial numers and you should find this.
GS + 9-digits (2007–present) Eleven characters GS YY MM ##### 2 letters (GS) 2-digit number 2-digit number 5-digit number Example: GS140406094 (April 2014) GS = manufactured by ???; some speculation is that GS merely stands for GIO Series YY = last two digits of year (e.g. 05=2005) MM = month represented as two digits (01=January...12=December) ##### = consecutive production number for the year
Leon, In a million years I wouldnt take that as fact.And I worked at the factory where they were made. To Ibanez, serial numbers are just like Fender, inventory control, especially during their banjo time of the seventies and eighties