Please help me ID the production date of an Epiphone, Zach Wylde, Les Paul, Custom. I thought the serial numbers on these were supposed to start with "ZW" or a "JP" in the case of a Joe Perry. I'm trying to identify that production date as well. The ZW guitar has the serial number painted on the back of the head stock in black. "I05063166" How do I identify the production date here? I've got the same issue on a Joe Perry Bone Yard Les Paul. I'm assuming the id process with be the same?