Look at the comments on this hit:
http://www.cdn-money.com/cdnmoney/servlet/cmtViewBill?ID=411382
On WHIB, Granite Rock has pictures of specimens of bills. They're from the Bank of Canada web-site.

I don't know why I Love Willy would know to enter it for a hit, but I think the bill should be removed from the system.
I had a look at the BOC site and noticed that all the difff, series has specimens with clearly identifiable s/n's so yah maybe something should be done to not allow those s/n's in the database
There is also another site where s/ns are available. I don't know if these can be entered as hits or not, but I sure am curious. I'd like someone to try it sometime to see if it is possible.
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