See this card?
This is a 1989 "Big League Starz" card of Cecil Fielder. There were cards of Fielder in the 1989 Calbee, Takara and Lotte sets (as well as a rumored card in the 1990 Lotte set). Those cards were all licensed by NPB and (I assume) the Japanese Pro Baseball Players Association (JPBPA). The "Big League Starz" card was not. Someone printed up the cards in 1990 and sold them wherever they could, probably to people who didn't know (or really care) any better.
I picked the card up on eBay for next to nothing (and I knew at the time it was unlicensed). I have noticed every year since Ichiro came over that there have been cards on eBay for the new Japanese players that I've never seen before. Cards like this one of Akinori Iwamura:
Now, I don't understand all the legal stuff that goes on with licensing and baseball cards, but I strongly suspect that cards like this are unlicensed.
So anyway the big news right now is that Junichi Tazawa is officially signing with the Red Sox tomorrow. As far as I know, there are no baseball cards that exist of Tazawa. I do not believe that his industrial league team has any baseball cards. But I predict that before spring training, someone will be selling a baseball card of Tazawa on eBay. It'll say "Future Star" or something like that on it or possibly the seller will claim it's a Japanese card of Tazawa. But it'll be unlicensed and essentially worthless.