Korea or Indonesia. The way the Ibanez numbering system works for their models depends on the guitar's features such as pickups, fretboard, bridge, etc. This is an RGR (the extra R meaning
Reverse Headstock), but sharing the 421 with the RG421, well that'll be down to the pickup and bridge config which is the same for both guitars -- 2 x humbuckers and a fixed bridge. Examples of what I'm talking about
:
RG8xxx - Japan, J custom, Dimarzio pickups, hand crafted
RG3xxx - Japan, Prestige, Dimarzio made IBZ pickups, maple top
RG2xxx - Japan, Prestige, Dimarzio made IBZ pickups
RG1xxx - Japan, Prestige, V-series pickups
RG7xx - Japan, Wizard neck, later models had direct-mounted pickups, early ones did not
RG6xx - Japan, Wizard neck, direct mounted QM series pickups -- similar to the RG700 series, but only intended for Europe
RG5xx - Japan, Wizard neck, Edge Pro
RG4xx - Japan, Wizard II neck, Edge Pro
RG3xx - Indonesia (was Korea), wizard II neck, Egde III (was Edge Pro II)
RG2xx - Indonesia (was Korea), Wizard II neck, non-locking trem
RG1xx - Indonesia (was Korea), Wizard II neck, pickguard, non-locking trem
RGx7x - H-S-H pickup configuration, direct-mounted (if Prestige),
sharktooth inlay
RGx5x - H-S-H, pickguard
RGx2x - H-H, direct-mounted (if Prestige)
RGxx7 - seven string
RGxx1 - hard tail
EXAMPLES:
RG2550 = RG2xxx + 5xx + x5x
RG2550 = Japan, Prestige, Dimarzio made IBZ pickups, Wizard neck, H-S-H, pickguard
RG370 = Indonesia (was Korea), Wizard II neck, H-S-H, sharktooth inlay, Edge III
RG321 = Indonesia (was Korea) , Wizard II neck, H-H, hardtail
RG1527 = Japan, prestige, V-series pickups, Wizard neck, Edge Pro, H-H, direct-mounted (if Prestige), 7-string
