I found an IBZ I didn't recognize, and didn't see in any of the catalogs I looked through. It's not an RG, so I have no clue about it, and I thought I'd ask those of you with a somewhat broader knowledge base...
It's a destroyer shaped body, but much smaller than normal (well, what I'd consider normal). It has the "check" headstock logo,
rosewood fretboard, dot inlays, candy-apple-red finish,
chrome hardware, screw in tuners. Made in Korea. First number in the serial was a 3. No pics, sorry.
