1966 $100 U.S. Notes
APMEX offers a fine selection of 1966 $100 Red Seal notes.
One of the most interesting types of U.S. money in circulation, Red Seal notes were backed only by the credit of the U.S. government, despite that fact that they were issued at a time when money was redeemable for gold or silver. These notes had a red treasury seal and red serial numbers. Red Seal notes were issued in $1, $2, $5 and $100 denominations.