I was offered the Reika sketch from Mandarake 
several months ago for a higher price.  I almost 
bought it but refrained.

They told me that Kanno himself brought the 
sketches in for sale...Which I don't 
doubt...Mandarake has connections with several 
character designers in Japan.

I've never seen or heard of Museum having this 
sketch in their posession...If Stephen 
does...Then he could come forward about it...

But...A lot of character design pages can be very 
similar in nature...So you are probably the one 
confused.

Here is a link to the sketch in question up on E-
bay:

http://cgi.ebay.com/ws/eBayISAPI.dll?
ViewItem&item=3269182751&category=1345

Any other opinions welcome...But...In my personal 
opinion...It's legit...I was even sent larger 
scans of the image...So it's in Mandarake's 
posession...