Koji Akiyama played outfield for the Lions and the Hawks over a 20 year career. He surpassed 2000 career hits as well as 400 home runs. He also spent one season, very early in his career, with the San Jose Bees, at the time an unaffiliated class A team. He was a flashy and dramatic player, doing, among other things, a backflip onto home plate after hitting a key home run in the Japan Series. He was also fast, turning in three 30-30 seasons. Superficially his statistics look like those of a young Jose Canseco, but this probably sells him short. For one thing, he was always better at getting on base than Canseco was.
The Lions were the dominant team of the late 80s and early 90s. The won the pennant many times. After an off year at age 31 (albeit one in which he still slugged >.500) he was traded to the Daiei Hawks.
Edited to add: I have Engel's book on vintage cards. It's really good as a guide and checklist, but you're right, the prices are... not helpful. I know about Prestige Collectables, but haven't bid in any of their auctions. I'll look into the next one.