I've read that the Korean versions of the Takara GF versions are exactly the same designwise (i.e the paint apps, chrome etc follow the same design pallete). For instance the korean wing saber has the gold n silver chrome and they even fixed the head defect that was present in the japanese ver.
Its an official and exclusive TF postage letter which only had a hong kong release. It was a free gift from RK for ordering something late last year. I'm not sure if the promotion is still on or not.