I woke up way too early this morning so did a bit of investigation. I wanted to be a cop...so ?
This is indeed a RG 250 B series, produced for the Brazilian market. .
It doesn't appear in any of the American, Japanese or European catalogs, so finding info on it is basically impossible. You can piece it together if you dig hard enough though and translate the Portugese info on it.
Basically though: TRS bridge, V6 pickups, Wizard II neck. It's basically a Korean spec guitar, but made in Japan.
There is actually a lot of debate regarding the manufacturing of these guitars. Some people reckon they were manufactured in Korea, but got MIJ necks. Other people reckon they were manufactured in Japan with Korean bodies and parts, but with MIJ necks.
I think it's probably the latter, but who knows ?.
How did you get this guitar if you don't mind me asking? It could shed some light on the matter?
p.s
What is going on with the bridge? It would seem as if the one saddle post is flaking or something, or is that just the photo?