The serial # shows it is was made by Samick in Korea in June 2002. Probably one of the last ones out of Korea, I think they had pretty much shut down the Korean factory by the end of 2002. That's why 2004 didn't seem right to me.
Actually, Samick started construction of the Indonesian factory in the early 1990s. Like Cort and other Korean corporations, the Korean economy in the 1990s was devastating. Cort also moved their factory to Indonesia, and AFAIK the only guitars Cort still makes in Korea are high end acoustics under their Parkwood brand as well as some acoustics for other companies like Carvin.
Samick was purchased in June 2002 and the new management made moves to make the company more profitable. By 2005, Samick was once again profitable.
Like all the great Samick Sheratons, your's has the highly desirable 5 piece neck. But here's the bottom line, you have the guitar, you know how good it is, would that change if I told you it was made in Krapsville??? It is what it is, enjoy it.