Even though I bought Tony Taka's T2 Art Gallery months ago (and I think I even mentioned it in passing) I've only just gotten around to reviewing it after being reminded of the Toranoana artist gallery 'pamphlets' due to Alpha's (有葉) recent exhibit. And in retrospect, though I over paid for it, I would have ended up paying even more if I wanted to get it now -_-
T2 Art Gallery is a large B4 sized, hardcover art book with roughly 60 illustrations in total. It's a very well made book, even though it was described as a "pamphlet" for the Toranoana exhibition. As it was made as a companion book for the exhibition, it was only sold at the gallery at Toranoana, which is the reason for the inflated re-sale prices. If you're an avid collector of Tony Taka's releases, you'll have seen many of the illustrations before. But they really come from a variety of sources---previous volumes of Tony's self-published Graph doujins and Fancy Frontier Magazine covers are present, although nothing that was featured in Tony's Ciel Chronicle appears in this book. But there is a significant amount of overlap with the Collect1 doujinshi.
For some reason, Tony Taka is one of the few artists for whom I'm not bothered by repeated illustrations in different art books and collections. I guess it's because there are generally a good amount of new illustrations along with the older ones. Plus in this case, having the art work at this size and quality is something entirely different than the smaller B5 doujinshi that make up his normal releases. Either way, I'm always glad to see more substantial releases from artists, even when they're not commercial releases.
There is one new illustration in the book, the final work on the closing page with a "thank you" message and printed autograph from Tony Taka. As with any Tony Taka release, there is a lot of nudity, though still it's not as explicit as his Collect1 Comiket 76 release. As the price for this book has seriously skyrocketed, I'm pretty sure most people would pass on Tony's T2 Art Gallery. But as with anything, if you can get it for a good price it would be worth it! Oh, and the prices are better by auction at the moment than Mandarake ;)