That means it was made in the 48th week of 2012. Maybe the workers wanted to make those impending Christmas gifts that little bit more special? This is well after 2009 when they made the 'pure material' models that featured flamed maple caps. RE the pickguard: Fair enough. The only feature I'm a fan of on modern LPs was when they introduced that 'clip-on' pickguard. Is that still a feature on current USA models? EDIT: Do you know the 5th number? It just occurred to me that they'd produce a lot of guitars in a week, so the day would be important too... Just in case anyone spots a 2012 Edwards e-lp-125als for sale with a similar serial. It'd be an interesting experiment.