Dave's post here from a few years ago. As you can see from the above photo, with some 1979 Yamakatsu cards for reference, they are pretty huge.
This card of Chunichi's Yazawa Kenichi, a member of the 2000 hit club, is also pretty cool. I note that there are several different Yamakatsu cards of several different Chunichi players spread across several different sets which feature them batting in front of the same green netting. I'm not sure why but it kind of works as a backdrop.
Otherwise though I think these are pretty cool cards. Of course they are a double edged sword: on the one hand they are great display pieces (at least the ones without the boring blue background) given their size. On the other hand they are a huge pain to store! I've already dinged the corners on two of them!