It doesn't have to be actual OCD. I meant, more so, the colloquialism. I have to have my bills, currency, in ascending order. First in terms of 1's, 5's, 10's, so on- followed by the bills that are worth the same in order of their serial number. Fo, FB 22xxxxx would come before AC 998xxxxxx, but FB 22xxxxxx would come after FB 21xxxxxx.