I just bought an ES-330 (Custom Shop), serial number CS052851. According to your serial number page, the Custom Shop serial number format is CSYRRRR:
CS stands for "Custom Shop"
Y indicates the production year
RRRR indicates the guitar's place in the sequence of production
So, going by that format, my serial number has an extra number. Is the Y sometimes YY? Or is my serial number a fake?
Thanks
richard