Heres what happened and I emailed dr about it as well.
I stamped these bills and hate to have them out there and not entered. I keep getting this error "You have entered an unknown serial number prefix"
$100.00 Year on all of them is 1975
aje7948
ajj3137
ajf0233
I did enter another one that was the same year and $100.00 bill as well. It went in as a 1988 bill even though it was a 1975 bill. It entered fine but these others did not.
ajk0917
Maybe ajk has some cross over numbers. to 1988 $100 bills
the 1975 $100 is not a enterable bill
With the one that did enter, I hadnt even checked the year. I just looked at the options and thought, well its older so the oldest year there is 1988 so I used it. I know, probably the wrong thing to do :) anyhow it took it so I went on to the next bill and thats when I noticed the year was 1975 and the rest wouldnt enter.
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