I have to confess... I missed it by 2. I missed the 2 little numeral 1's above the portrait. I did not count the "un", but did get that correct.

You could have made any number wrong by using or not using "un" or including/excluding the serial number. I did not include the serial as I had no idea what it was without looking.

OK Smarty pants how many times does a current US One Dollar Bill say "one"??