I bought a lefty loaded tele body from ebay a few weeks ago. It was listed as a Mexican Standard. I've looked at all of the fender serial number charts I can find to see exactly what year it is, but the number doesn't conform to any of the patterns. The number on the barcoded tag is M000346571 You can also see two stamps in the neck pocket. One is "OCT 10 A." The other is "058176" Since it starts with an "M", I would assume it is indeed Mexican. Is this number possibly just a production tag of some sort and not the serial number of the guitar itself? Any help would be greatly appreciated.