From what I know, Yo '84 also came from Korea and were only assembled in the US, bare the handful of handmade expo-parts.
May I ask why you want to know the detail about the serials to begin with? there are no high-value parts among those anyway, in that sense it's quite irrelevant.
I'm just curious because the quality on the Gibby Kramer Baretta's I recently bought wasn't quite up to what I expected from a Korean made guitar. I was just wondering what company made them in Korea.
In the past I have owned Samick made guitars and I wanted to know if it was made by the same company. My guitars are for my own enjoyment and I don't care about what they are worth. A well made asian made guitar is more valuable to me than a poorly made USA made guitar and vice versa...