Here's a poster that I bought at Anime Expo 2005. Riku and Kisaki were special guests, so they signed Phantasmagoria CDs, posters, and other memorabilia.
The poster is in pretty good condition. However, I had it on my wall for a few days (literally, about a week) so there is tape on the corners and small creases, but those aren't noticeable, and shouldn't matter much, especially if you plan on taping or nailing it to you wall.
Height: 74 cm
Width: 51 cm
Close up of autograph detail (signed by both, Riku and Kisaki!):
I will ship this in a poster tube, which would cost $6 to the US, $8 to Canada, and $12 everywhere else.
I accept paypal, money orders, and concealed cash (at your own risk).
Please comment here if you're interested, I'll get back to you asap. :]