I was referring to the Legal Tender "United States Note" red seals. I believe the $100 version was only issued as a series 1966 and 1966A. They aren't crazy expensive, I just have never picked one up. I've always considered the small side national and fed notes to be more of a brown seal than a maroon seal...but I know that maroon is probably a more accurate description.
thanks all. i bought them "years apart" so it really took me time to find them, buy them and put them together.