These two Japanese maples (Acer palmatum) are both shohin size, meaning they are below 23 cm. The big holes ae a main feature of these two treees. In Japan this is frowned upon. They don't want holes on deciduous trees. I love them. I think these would be much more boring without the holes.
As long as we cuold import maples from Japan (we cannot anymore since November 2008!!!) I always looked for the ones with big holes. They were rated second or third quality in Japan and very cheap. i think this is a big mistake. Big holes can make a maple very interesting.
BTW. history has proven that fungi will NOT attack maples with big holes more than they will attack maples anyway.