If you're looking for affordable WCF, you can't go wrong using From Japan to trawl through auctions and Amazon Japan.
>>6761281>>6761287I've seen guides for comparing the original and bootlegs, which all seem to be for Black/Black RX. Having seen some photos of this one from Japanese sellers, I think you have a legit one. Either way, you paid about full retail price and it looks great to me. My only Showa figures are Charge Up Stronger, Rider 1, Mole Beastman, and Rider Kick Amazon and Stronger.
I dig this posed RX because it looks like a Saban Masked Rider figurine my favorite aunt bought for me as a kid, so I'd like to find an affordable one for sentimental reasons. I've not even seen Black or RX yet.