What about a Corum TIitanium TI-BRridge Skeleton? You should be able to pic it up used for about $8K.
http://www.rolexforums.com/showthread.php?t=319838
Hermes Skeleton $5900
http://forums.timezone.com/index.php...=0#msg_6644233
Chronoswiss Stainless Steel Opus Skeleton Chonograph Date Ref: C741$3700
http://forums.watchnet.com/index.php...o=643545&rid=0
Perrelet Chronograph Skeleton GMT 18K $8500
http://forums.timezone.com/index.php...=0#msg_6638475
Do yourself a favor and start watching the website
www.watchrecon.com. Just type in the word "skeleton" into the search engine and it'll search a ton of watch websites for possible matches. You never know what you'll find. That's the way I came up with the four I listed above. Took me about 10 seconds to find them. Sometimes you find watches you didn't even know existed. You can also save a ton of money buying a used watch. I just purchased a Panerai from a search I did on watchrecon.
Good-luck!