So-called "atheist" bills. No "In God We Trust" over the Treasury building. I'd keep them just 'cause they're cool. The topmost bill looks to be in slightly better condition.
It's your call. I am not a currency collector for the most part, but for generally common bills of a date, a crisp uncirculated bill goes for a few dollars above face value. I kept a 1934 $20 bill I got in the 80s is about the same condition of the specimens above. I saw a crisp uncirculated bill like it for sale at my LCS; $27. The store owner said $2 of that was for the PVC free vinyl sleeve. My $20 is only worth about $22 to a collector. As noted, fun to have or find in circulation. But unless there is something special for that date, maybe keep the best and spend the other. But wait for others to chime in. Paper is not my area.
Not a spender. Worth around $15. Max $20 for the cleaner one with less creases. Used to see these all the time in circulation when I was a kid. (1970's)
Those bills are as old as I am so I'd save them. The condition looks pretty good too. Minor folds and a small light stain but after all those years they are keepers as far as I'm concerned.
Definitely keepers. Series 1950E is the rarest of the 1950x series. I don't have any examples myself. These were printed for a short time in the mid-1960's as the BEP transitioned from 18-subject sheet notes to 32-subject sheet notes. This is the last series to have been printed without "In God We Trust" on the back. The motto was mandated by Congress in 1955 and was gradually incorporated onto new currency over time.
A short series for several denominations with only three districts having notes printed for, New York, Chicago and San Francisco. I would consider them keepers.
Awhile back the teller of my local bank sold me $400 worth. I still think that the flag is upside down.
Personaly I keep all older designs in chrisp condition unless its like a 1990 100 or 50 because of two reasons. Reason 1 im 17 and if I keep a 1990 20 now im not gonna blow it on stuff I dont need. Reason two it looks cool when I go through my bill book with all the chrisp 1934 twenties and chrisp red seals and Silver certificates.