OK, looking through the manual, I see that there are different beginning serial #'s for the XVZ12. There is JYA26H (TK), mine is a 41R (L), 41V (DL), 47R (KC2), 47T (DKC2), 31M (TDK). Does anyone know the difference or what the different enumerators stand for? I'm just passing time and was wondering...