Before anyone gets too excited, it was most likely not worth much more than face value.
Here is a link to a completed auction on eBay for a 1934 $100 Fed. Reserve Note:
http://cgi.ebay.com/1-1934-100-FEDERAL-RESERVE-NOTE_W0QQitemZ310012515966QQihZ021QQcategoryZ40033 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Having said that, there could be other factors that would make it worth more like if it was in uncirculated condition, was a "star" note, unique serial number or from a small printing run etc.
Do you have any more
