Thanks for the reply, you are correct, my mistake on the year of the $100 bills...they indeed are 1975, wasn't wearing my glasses!
the other serial prefixes are AJA, AJB, AJC, AJD, AJE, AJF, AFH, AJL, and a couple of JB.
Pretty sure these are all spenders except possible for the JB's and of course the AJX the AJX is the roughest bill in the batch too....
Anyone want a scan?