I would also keep them. Not going to find these in circulation anymore and if you do, you're at the right place at the right time.
Cool notes. I never get anything older then 2003 in change these days. (Oddly enough, the only time I did was a 1999 $1 Star!). I sure wish I had been paying attention back then, these are the kinds of notes that I remember growing up with, and now they are practically gone.
I'd spend them so fast your head would spin I'd spend them so fast your head would spin - there would be no added value in this part of the woods.
I've found a few over the years and kept them. No real premium on these but neat anyway. If your not interested in them I'm sure someone here on CT would take them off your hands for a wee bit over face value.
I'm keeping for now....but I wondered if there was a premium on them. If I let them go, I'll offer them here first.