The impressive deadwood looks like something you'd see on a juniper, as does the bark (what you can see of it). But the foliage looks a little spikey, almost like needles. Maybe it's just my eyes. This photo and the others shown here were taken by Dave DeGroot. Dave is, among other things, the author of Principles of Bonsai Design.
The photos shown here were taken by Dave DeGroot at the the Ueno Green Club’s market near the 2016 Kokufu Exhibition. Though these bonsai are notable (and worth a lot of money), they are not the trees that were chosen for the Exhibiton.
If you’d like to see more Green Club trees, here are a couple older Bark posts: from the 2015 Kokufu and Green Club and from the 2011 Green Club.
A little too clunky to be show-worthy, but still quite powerful. We'll guess Trident maple.
Here's one I'll bet you'd like to have in your backyard. Great base, good taper, nice ramification and the perfect pot. Is it a Quince?
If I'm reading it right, this muscular little pine's tag say 450,000 yen. This comes to almost exactly 4,000 dollars.
A page from Dave DeGroot's Principle of Bonsai Design Even though it is less than one year off the press it is already widely recognized as one of the very best bonsai design books ever published the English language
The cover
Another page If you're not familiar with this excellent book, you might want to give it look