MZ - M = Mexico, Z = 2000's, the first number following the serial number prefix is the year. MN - M = Mexico, N = Nineties (1990s), the first number following the serial number prefix is the year. The Japanese MIJ (Made in Japan) Squiers were made by FujiGen up to 1997 and the Japanese CIJ (Crafted in Japan) Squiers were made by Tokai and Dyna from 1997.