Patrick Nagel Untitled, c. 1980's Mixed media on illustration board Unsigned; Playboy Reproduction stamps on verso «PLAYBOY»S ARTWORK REPRODUCTION PROHIBITED WITHOUT PLAYBOY»S PERMISSION» stamp Image: 13 x 9 inches; Framed: 22.5 x 17.5 inches Estimate: $ 14,000 / $ 18,000 (smauctions.com)
Signed «Ansel Adams» in ballpoint pen on the mount l.r. Gelatin silver print mounted on Crescent illustration board, image / sheet More... (skinnerinc.com)
Probably GSW's favorite so far is the awesome Katamari Damacy mini-comic from Quezzie (who has a larger version on her / his own site), and of which it's noted of the picture in the comments: «It's colored pencil and gouache on Canson illustration board.» (gamesetwatch.com)